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Finding the Fourth Proportional to 720,628.80, 1,077,832.80 and 608,654.40

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Solution

The fourth proportional to 720,628.80, 1,077,832.80 and 608,654.40 is: 910,354.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,628.80 : 1,077,832.80 = 608,654.40 : x
  2. Step 2: Convert to fraction form
    720,628.80/1,077,832.80 = 608,654.40/x
  3. Step 3: Cross multiply
    720,628.80x = 1,077,832.80 × 608,654.40
  4. Step 4: Simplify right side
    720,628.80x = 656,027,676,184.32
  5. Step 5: Solve for x
    x = 656,027,676,184.32/720,628.80
  6. Step 6: Final answer
    x = 910,354.51

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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.