Home / 429,031,875.66-643,553,792.19-122,323,988.54

Finding the Fourth Proportional to 429,031,875.66, 643,553,792.19 and 122,323,988.54

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Solution

The fourth proportional to 429,031,875.66, 643,553,792.19 and 122,323,988.54 is: 183,487,687.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,031,875.66 : 643,553,792.19 = 122,323,988.54 : x
  2. Step 2: Convert to fraction form
    429,031,875.66/643,553,792.19 = 122,323,988.54/x
  3. Step 3: Cross multiply
    429,031,875.66x = 643,553,792.19 × 122,323,988.54
  4. Step 4: Simplify right side
    429,031,875.66x = 78,722,066,697,505,344
  5. Step 5: Solve for x
    x = 78,722,066,697,505,344/429,031,875.66
  6. Step 6: Final answer
    x = 183,487,687.43

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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.