Home / 400,897,129.20-601,345,693.80-128,295,452.40

Finding the Fourth Proportional to 400,897,129.20, 601,345,693.80 and 128,295,452.40

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Solution

The fourth proportional to 400,897,129.20, 601,345,693.80 and 128,295,452.40 is: 192,443,178.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,897,129.20 : 601,345,693.80 = 128,295,452.40 : x
  2. Step 2: Convert to fraction form
    400,897,129.20/601,345,693.80 = 128,295,452.40/x
  3. Step 3: Cross multiply
    400,897,129.20x = 601,345,693.80 × 128,295,452.40
  4. Step 4: Simplify right side
    400,897,129.20x = 77,149,917,834,862,880
  5. Step 5: Solve for x
    x = 77,149,917,834,862,880/400,897,129.20
  6. Step 6: Final answer
    x = 192,443,178.60

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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.