Home / 717,072,221.36-990,017,367.38-585,228,197.36

Finding the Fourth Proportional to 717,072,221.36, 990,017,367.38 and 585,228,197.36

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Solution

The fourth proportional to 717,072,221.36, 990,017,367.38 and 585,228,197.36 is: 807,988,459.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,072,221.36 : 990,017,367.38 = 585,228,197.36 : x
  2. Step 2: Convert to fraction form
    717,072,221.36/990,017,367.38 = 585,228,197.36/x
  3. Step 3: Cross multiply
    717,072,221.36x = 990,017,367.38 × 585,228,197.36
  4. Step 4: Simplify right side
    717,072,221.36x = 579,386,079,266,890,240
  5. Step 5: Solve for x
    x = 579,386,079,266,890,240/717,072,221.36
  6. Step 6: Final answer
    x = 807,988,459.19

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Half scale
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Double scale
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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.