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Finding the Fourth Proportional to 713,470.40, 1,070,205.60 and 376,380.80

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Solution

The fourth proportional to 713,470.40, 1,070,205.60 and 376,380.80 is: 564,571.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,470.40 : 1,070,205.60 = 376,380.80 : x
  2. Step 2: Convert to fraction form
    713,470.40/1,070,205.60 = 376,380.80/x
  3. Step 3: Cross multiply
    713,470.40x = 1,070,205.60 × 376,380.80
  4. Step 4: Simplify right side
    713,470.40x = 402,804,839,892.48
  5. Step 5: Solve for x
    x = 402,804,839,892.48/713,470.40
  6. Step 6: Final answer
    x = 564,571.20

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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.