Home / 787,140.60-1,182,023.10-432,409.20

Finding the Fourth Proportional to 787,140.60, 1,182,023.10 and 432,409.20

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Solution

The fourth proportional to 787,140.60, 1,182,023.10 and 432,409.20 is: 649,334.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,140.60 : 1,182,023.10 = 432,409.20 : x
  2. Step 2: Convert to fraction form
    787,140.60/1,182,023.10 = 432,409.20/x
  3. Step 3: Cross multiply
    787,140.60x = 1,182,023.10 × 432,409.20
  4. Step 4: Simplify right side
    787,140.60x = 511,117,663,052.52
  5. Step 5: Solve for x
    x = 511,117,663,052.52/787,140.60
  6. Step 6: Final answer
    x = 649,334.65

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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.