Home / 904,124.80-1,357,742.40-639,740.80

Finding the Fourth Proportional to 904,124.80, 1,357,742.40 and 639,740.80

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Solution

The fourth proportional to 904,124.80, 1,357,742.40 and 639,740.80 is: 960,711.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    904,124.80 : 1,357,742.40 = 639,740.80 : x
  2. Step 2: Convert to fraction form
    904,124.80/1,357,742.40 = 639,740.80/x
  3. Step 3: Cross multiply
    904,124.80x = 1,357,742.40 × 639,740.80
  4. Step 4: Simplify right side
    904,124.80x = 868,603,209,169.92
  5. Step 5: Solve for x
    x = 868,603,209,169.92/904,124.80
  6. Step 6: Final answer
    x = 960,711.63

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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.