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Finding the Fourth Proportional to 713,772.80, 1,069,622.40 and 608,019.20

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Solution

The fourth proportional to 713,772.80, 1,069,622.40 and 608,019.20 is: 911,145.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,772.80 : 1,069,622.40 = 608,019.20 : x
  2. Step 2: Convert to fraction form
    713,772.80/1,069,622.40 = 608,019.20/x
  3. Step 3: Cross multiply
    713,772.80x = 1,069,622.40 × 608,019.20
  4. Step 4: Simplify right side
    713,772.80x = 650,350,955,950.08
  5. Step 5: Solve for x
    x = 650,350,955,950.08/713,772.80
  6. Step 6: Final answer
    x = 911,145.61

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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.