Home / 1,382,788,714.92-1,908,133,069.32-779,926,116.30

Finding the Fourth Proportional to 1,382,788,714.92, 1,908,133,069.32 and 779,926,116.30

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Solution

The fourth proportional to 1,382,788,714.92, 1,908,133,069.32 and 779,926,116.30 is: 1,076,232,976.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,382,788,714.92 : 1,908,133,069.32 = 779,926,116.30 : x
  2. Step 2: Convert to fraction form
    1,382,788,714.92/1,908,133,069.32 = 779,926,116.30/x
  3. Step 3: Cross multiply
    1,382,788,714.92x = 1,908,133,069.32 × 779,926,116.30
  4. Step 4: Simplify right side
    1,382,788,714.92x = 1,488,202,814,138,346,240
  5. Step 5: Solve for x
    x = 1,488,202,814,138,346,240/1,382,788,714.92
  6. Step 6: Final answer
    x = 1,076,232,976.22

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Double scale
Find fourth proportional to 1,382,788,715.92, 1,908,133,070.70 and 779,926,117.30
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.