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Finding the Fourth Proportional to 978,720,703.38, 1,350,634,495.41 and 532,687,264.79

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Solution

The fourth proportional to 978,720,703.38, 1,350,634,495.41 and 532,687,264.79 is: 735,108,384.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,720,703.38 : 1,350,634,495.41 = 532,687,264.79 : x
  2. Step 2: Convert to fraction form
    978,720,703.38/1,350,634,495.41 = 532,687,264.79/x
  3. Step 3: Cross multiply
    978,720,703.38x = 1,350,634,495.41 × 532,687,264.79
  4. Step 4: Simplify right side
    978,720,703.38x = 719,465,795,084,221,568
  5. Step 5: Solve for x
    x = 719,465,795,084,221,568/978,720,703.38
  6. Step 6: Final answer
    x = 735,108,384.44

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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.