Home / 485,038.40-727,557.60-477,165.20

Finding the Fourth Proportional to 485,038.40, 727,557.60 and 477,165.20

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Solution

The fourth proportional to 485,038.40, 727,557.60 and 477,165.20 is: 715,747.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,038.40 : 727,557.60 = 477,165.20 : x
  2. Step 2: Convert to fraction form
    485,038.40/727,557.60 = 477,165.20/x
  3. Step 3: Cross multiply
    485,038.40x = 727,557.60 × 477,165.20
  4. Step 4: Simplify right side
    485,038.40x = 347,165,167,715.52
  5. Step 5: Solve for x
    x = 347,165,167,715.52/485,038.40
  6. Step 6: Final answer
    x = 715,747.80

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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.