Home / 1,293,347,206.20-1,940,020,809.30-638,611,894.20

Finding the Fourth Proportional to 1,293,347,206.20, 1,940,020,809.30 and 638,611,894.20

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Solution

The fourth proportional to 1,293,347,206.20, 1,940,020,809.30 and 638,611,894.20 is: 957,917,841.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293,347,206.20 : 1,940,020,809.30 = 638,611,894.20 : x
  2. Step 2: Convert to fraction form
    1,293,347,206.20/1,940,020,809.30 = 638,611,894.20/x
  3. Step 3: Cross multiply
    1,293,347,206.20x = 1,940,020,809.30 × 638,611,894.20
  4. Step 4: Simplify right side
    1,293,347,206.20x = 1,238,920,363,814,490,112
  5. Step 5: Solve for x
    x = 1,238,920,363,814,490,112/1,293,347,206.20
  6. Step 6: Final answer
    x = 957,917,841.30

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.