Home / 747,653.40-1,120,143.60-455,000.40

Finding the Fourth Proportional to 747,653.40, 1,120,143.60 and 455,000.40

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Solution

The fourth proportional to 747,653.40, 1,120,143.60 and 455,000.40 is: 681,687.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,653.40 : 1,120,143.60 = 455,000.40 : x
  2. Step 2: Convert to fraction form
    747,653.40/1,120,143.60 = 455,000.40/x
  3. Step 3: Cross multiply
    747,653.40x = 1,120,143.60 × 455,000.40
  4. Step 4: Simplify right side
    747,653.40x = 509,665,786,057.44
  5. Step 5: Solve for x
    x = 509,665,786,057.44/747,653.40
  6. Step 6: Final answer
    x = 681,687.24

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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.