Home / 687,492,463.61-948,762,516.27-386,130,882.66

Finding the Fourth Proportional to 687,492,463.61, 948,762,516.27 and 386,130,882.66

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Solution

The fourth proportional to 687,492,463.61, 948,762,516.27 and 386,130,882.66 is: 532,873,489.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,492,463.61 : 948,762,516.27 = 386,130,882.66 : x
  2. Step 2: Convert to fraction form
    687,492,463.61/948,762,516.27 = 386,130,882.66/x
  3. Step 3: Cross multiply
    687,492,463.61x = 948,762,516.27 × 386,130,882.66
  4. Step 4: Simplify right side
    687,492,463.61x = 366,346,507,842,057,728
  5. Step 5: Solve for x
    x = 366,346,507,842,057,728/687,492,463.61
  6. Step 6: Final answer
    x = 532,873,489.14

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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.