Home / 904,123.80-1,357,740.90-639,739.80

Finding the Fourth Proportional to 904,123.80, 1,357,740.90 and 639,739.80

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Solution

The fourth proportional to 904,123.80, 1,357,740.90 and 639,739.80 is: 960,710.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    904,123.80 : 1,357,740.90 = 639,739.80 : x
  2. Step 2: Convert to fraction form
    904,123.80/1,357,740.90 = 639,739.80/x
  3. Step 3: Cross multiply
    904,123.80x = 1,357,740.90 × 639,739.80
  4. Step 4: Simplify right side
    904,123.80x = 868,600,891,817.82
  5. Step 5: Solve for x
    x = 868,600,891,817.82/904,123.80
  6. Step 6: Final answer
    x = 960,710.13

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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.