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Finding the Fourth Proportional to 578,974.40, 868,461.60 and 357,790.40

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Solution

The fourth proportional to 578,974.40, 868,461.60 and 357,790.40 is: 536,685.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,974.40 : 868,461.60 = 357,790.40 : x
  2. Step 2: Convert to fraction form
    578,974.40/868,461.60 = 357,790.40/x
  3. Step 3: Cross multiply
    578,974.40x = 868,461.60 × 357,790.40
  4. Step 4: Simplify right side
    578,974.40x = 310,727,223,248.64
  5. Step 5: Solve for x
    x = 310,727,223,248.64/578,974.40
  6. Step 6: Final answer
    x = 536,685.60

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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.