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Finding the Fourth Proportional to 472,279.20, 708,418.80 and 452,596.20

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Solution

The fourth proportional to 472,279.20, 708,418.80 and 452,596.20 is: 678,894.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,279.20 : 708,418.80 = 452,596.20 : x
  2. Step 2: Convert to fraction form
    472,279.20/708,418.80 = 452,596.20/x
  3. Step 3: Cross multiply
    472,279.20x = 708,418.80 × 452,596.20
  4. Step 4: Simplify right side
    472,279.20x = 320,627,656,888.56
  5. Step 5: Solve for x
    x = 320,627,656,888.56/472,279.20
  6. Step 6: Final answer
    x = 678,894.30

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Double scale
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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.