Home / 864,644,700.78-1,297,101,420.42-290,350,398.06

Finding the Fourth Proportional to 864,644,700.78, 1,297,101,420.42 and 290,350,398.06

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Solution

The fourth proportional to 864,644,700.78, 1,297,101,420.42 and 290,350,398.06 is: 435,570,718.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,644,700.78 : 1,297,101,420.42 = 290,350,398.06 : x
  2. Step 2: Convert to fraction form
    864,644,700.78/1,297,101,420.42 = 290,350,398.06/x
  3. Step 3: Cross multiply
    864,644,700.78x = 1,297,101,420.42 × 290,350,398.06
  4. Step 4: Simplify right side
    864,644,700.78x = 376,613,913,743,138,432
  5. Step 5: Solve for x
    x = 376,613,913,743,138,432/864,644,700.78
  6. Step 6: Final answer
    x = 435,570,718.70

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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.