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Finding the Fourth Proportional to 607,631.60, 910,864.20 and 472,620.80

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Solution

The fourth proportional to 607,631.60, 910,864.20 and 472,620.80 is: 708,477.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,631.60 : 910,864.20 = 472,620.80 : x
  2. Step 2: Convert to fraction form
    607,631.60/910,864.20 = 472,620.80/x
  3. Step 3: Cross multiply
    607,631.60x = 910,864.20 × 472,620.80
  4. Step 4: Simplify right side
    607,631.60x = 430,493,366,895.36
  5. Step 5: Solve for x
    x = 430,493,366,895.36/607,631.60
  6. Step 6: Final answer
    x = 708,477.58

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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.