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Finding the Fourth Proportional to 547,271.70, 820,907.55 and 472,476.30

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Solution

The fourth proportional to 547,271.70, 820,907.55 and 472,476.30 is: 708,714.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,271.70 : 820,907.55 = 472,476.30 : x
  2. Step 2: Convert to fraction form
    547,271.70/820,907.55 = 472,476.30/x
  3. Step 3: Cross multiply
    547,271.70x = 820,907.55 × 472,476.30
  4. Step 4: Simplify right side
    547,271.70x = 387,859,361,866.07
  5. Step 5: Solve for x
    x = 387,859,361,866.07/547,271.70
  6. Step 6: Final answer
    x = 708,714.45

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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.