Home / 778,729.20-1,074,876.12-456,509.04

Finding the Fourth Proportional to 778,729.20, 1,074,876.12 and 456,509.04

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Solution

The fourth proportional to 778,729.20, 1,074,876.12 and 456,509.04 is: 630,117.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,729.20 : 1,074,876.12 = 456,509.04 : x
  2. Step 2: Convert to fraction form
    778,729.20/1,074,876.12 = 456,509.04/x
  3. Step 3: Cross multiply
    778,729.20x = 1,074,876.12 × 456,509.04
  4. Step 4: Simplify right side
    778,729.20x = 490,690,665,660.13
  5. Step 5: Solve for x
    x = 490,690,665,660.13/778,729.20
  6. Step 6: Final answer
    x = 630,117.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.