Home / 900,007.20-1,350,140.40-479,314.80

Finding the Fourth Proportional to 900,007.20, 1,350,140.40 and 479,314.80

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Solution

The fourth proportional to 900,007.20, 1,350,140.40 and 479,314.80 is: 719,041.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,007.20 : 1,350,140.40 = 479,314.80 : x
  2. Step 2: Convert to fraction form
    900,007.20/1,350,140.40 = 479,314.80/x
  3. Step 3: Cross multiply
    900,007.20x = 1,350,140.40 × 479,314.80
  4. Step 4: Simplify right side
    900,007.20x = 647,142,275,797.92
  5. Step 5: Solve for x
    x = 647,142,275,797.92/900,007.20
  6. Step 6: Final answer
    x = 719,041.22

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1.5x scale

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.