Home / 631,399,615.17-870,899,126.63-411,680,648.13

Finding the Fourth Proportional to 631,399,615.17, 870,899,126.63 and 411,680,648.13

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Solution

The fourth proportional to 631,399,615.17, 870,899,126.63 and 411,680,648.13 is: 567,837,401.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,399,615.17 : 870,899,126.63 = 411,680,648.13 : x
  2. Step 2: Convert to fraction form
    631,399,615.17/870,899,126.63 = 411,680,648.13/x
  3. Step 3: Cross multiply
    631,399,615.17x = 870,899,126.63 × 411,680,648.13
  4. Step 4: Simplify right side
    631,399,615.17x = 358,532,316,906,889,344
  5. Step 5: Solve for x
    x = 358,532,316,906,889,344/631,399,615.17
  6. Step 6: Final answer
    x = 567,837,401.69

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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.