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Finding the Fourth Proportional to 665,366.06, 917,249.15 and 474,047.30

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Solution

The fourth proportional to 665,366.06, 917,249.15 and 474,047.30 is: 653,504.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,366.06 : 917,249.15 = 474,047.30 : x
  2. Step 2: Convert to fraction form
    665,366.06/917,249.15 = 474,047.30/x
  3. Step 3: Cross multiply
    665,366.06x = 917,249.15 × 474,047.30
  4. Step 4: Simplify right side
    665,366.06x = 434,819,482,984.80
  5. Step 5: Solve for x
    x = 434,819,482,984.80/665,366.06
  6. Step 6: Final answer
    x = 653,504.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.