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Finding the Fourth Proportional to 464,739.20, 697,108.80 and 287,446.40

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Solution

The fourth proportional to 464,739.20, 697,108.80 and 287,446.40 is: 431,169.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,739.20 : 697,108.80 = 287,446.40 : x
  2. Step 2: Convert to fraction form
    464,739.20/697,108.80 = 287,446.40/x
  3. Step 3: Cross multiply
    464,739.20x = 697,108.80 × 287,446.40
  4. Step 4: Simplify right side
    464,739.20x = 200,381,414,968.32
  5. Step 5: Solve for x
    x = 200,381,414,968.32/464,739.20
  6. Step 6: Final answer
    x = 431,169.60

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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.