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Finding the Fourth Proportional to 864,592.80, 1,296,888 and 480,585.76

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Solution

The fourth proportional to 864,592.80, 1,296,888 and 480,585.76 is: 720,877.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,592.80 : 1,296,888 = 480,585.76 : x
  2. Step 2: Convert to fraction form
    864,592.80/1,296,888 = 480,585.76/x
  3. Step 3: Cross multiply
    864,592.80x = 1,296,888 × 480,585.76
  4. Step 4: Simplify right side
    864,592.80x = 623,265,905,114.88
  5. Step 5: Solve for x
    x = 623,265,905,114.88/864,592.80
  6. Step 6: Final answer
    x = 720,877.97

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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.