Home / 917,999.60-1,376,999.40-318,761.60

Finding the Fourth Proportional to 917,999.60, 1,376,999.40 and 318,761.60

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Solution

The fourth proportional to 917,999.60, 1,376,999.40 and 318,761.60 is: 478,142.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,999.60 : 1,376,999.40 = 318,761.60 : x
  2. Step 2: Convert to fraction form
    917,999.60/1,376,999.40 = 318,761.60/x
  3. Step 3: Cross multiply
    917,999.60x = 1,376,999.40 × 318,761.60
  4. Step 4: Simplify right side
    917,999.60x = 438,934,531,943.04
  5. Step 5: Solve for x
    x = 438,934,531,943.04/917,999.60
  6. Step 6: Final answer
    x = 478,142.40

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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.