Home / 423,155,005.80-634,732,508.70-392,544,004.20

Finding the Fourth Proportional to 423,155,005.80, 634,732,508.70 and 392,544,004.20

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Solution

The fourth proportional to 423,155,005.80, 634,732,508.70 and 392,544,004.20 is: 588,816,006.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,155,005.80 : 634,732,508.70 = 392,544,004.20 : x
  2. Step 2: Convert to fraction form
    423,155,005.80/634,732,508.70 = 392,544,004.20/x
  3. Step 3: Cross multiply
    423,155,005.80x = 634,732,508.70 × 392,544,004.20
  4. Step 4: Simplify right side
    423,155,005.80x = 249,160,440,561,009,344
  5. Step 5: Solve for x
    x = 249,160,440,561,009,344/423,155,005.80
  6. Step 6: Final answer
    x = 588,816,006.30

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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.