Home / 918,165.60-1,377,248.40-318,927.60

Finding the Fourth Proportional to 918,165.60, 1,377,248.40 and 318,927.60

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Solution

The fourth proportional to 918,165.60, 1,377,248.40 and 318,927.60 is: 478,391.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,165.60 : 1,377,248.40 = 318,927.60 : x
  2. Step 2: Convert to fraction form
    918,165.60/1,377,248.40 = 318,927.60/x
  3. Step 3: Cross multiply
    918,165.60x = 1,377,248.40 × 318,927.60
  4. Step 4: Simplify right side
    918,165.60x = 439,242,526,815.84
  5. Step 5: Solve for x
    x = 439,242,526,815.84/918,165.60
  6. Step 6: Final answer
    x = 478,391.40

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Double scale
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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.