Home / 642,427.60-963,641.40-617,933.20

Finding the Fourth Proportional to 642,427.60, 963,641.40 and 617,933.20

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Solution

The fourth proportional to 642,427.60, 963,641.40 and 617,933.20 is: 926,899.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,427.60 : 963,641.40 = 617,933.20 : x
  2. Step 2: Convert to fraction form
    642,427.60/963,641.40 = 617,933.20/x
  3. Step 3: Cross multiply
    642,427.60x = 963,641.40 × 617,933.20
  4. Step 4: Simplify right side
    642,427.60x = 595,466,013,954.48
  5. Step 5: Solve for x
    x = 595,466,013,954.48/642,427.60
  6. Step 6: Final answer
    x = 926,899.80

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Similar ratio
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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.