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Finding the Fourth Proportional to 472,655.80, 708,335.70 and 303,657.40

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Solution

The fourth proportional to 472,655.80, 708,335.70 and 303,657.40 is: 455,069.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,655.80 : 708,335.70 = 303,657.40 : x
  2. Step 2: Convert to fraction form
    472,655.80/708,335.70 = 303,657.40/x
  3. Step 3: Cross multiply
    472,655.80x = 708,335.70 × 303,657.40
  4. Step 4: Simplify right side
    472,655.80x = 215,091,376,989.18
  5. Step 5: Solve for x
    x = 215,091,376,989.18/472,655.80
  6. Step 6: Final answer
    x = 455,069.79

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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.