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Finding the Fourth Proportional to 612,077.70, 918,116.55 and 472,109.70

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Solution

The fourth proportional to 612,077.70, 918,116.55 and 472,109.70 is: 708,164.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,077.70 : 918,116.55 = 472,109.70 : x
  2. Step 2: Convert to fraction form
    612,077.70/918,116.55 = 472,109.70/x
  3. Step 3: Cross multiply
    612,077.70x = 918,116.55 × 472,109.70
  4. Step 4: Simplify right side
    612,077.70x = 433,451,728,985.54
  5. Step 5: Solve for x
    x = 433,451,728,985.54/612,077.70
  6. Step 6: Final answer
    x = 708,164.55

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Similar ratio
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1.5x scale

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.