Home / 864,008.70-1,296,013.05-486,095.10

Finding the Fourth Proportional to 864,008.70, 1,296,013.05 and 486,095.10

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Solution

The fourth proportional to 864,008.70, 1,296,013.05 and 486,095.10 is: 729,142.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,008.70 : 1,296,013.05 = 486,095.10 : x
  2. Step 2: Convert to fraction form
    864,008.70/1,296,013.05 = 486,095.10/x
  3. Step 3: Cross multiply
    864,008.70x = 1,296,013.05 × 486,095.10
  4. Step 4: Simplify right side
    864,008.70x = 629,985,593,141.06
  5. Step 5: Solve for x
    x = 629,985,593,141.06/864,008.70
  6. Step 6: Final answer
    x = 729,142.65

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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.