Home / 878,972.40-1,318,285.80-287,996.40

Finding the Fourth Proportional to 878,972.40, 1,318,285.80 and 287,996.40

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Solution

The fourth proportional to 878,972.40, 1,318,285.80 and 287,996.40 is: 431,937.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,972.40 : 1,318,285.80 = 287,996.40 : x
  2. Step 2: Convert to fraction form
    878,972.40/1,318,285.80 = 287,996.40/x
  3. Step 3: Cross multiply
    878,972.40x = 1,318,285.80 × 287,996.40
  4. Step 4: Simplify right side
    878,972.40x = 379,661,564,571.12
  5. Step 5: Solve for x
    x = 379,661,564,571.12/878,972.40
  6. Step 6: Final answer
    x = 431,937.98

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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.