Home / 812,048.10-1,218,240.24-243,406.23

Finding the Fourth Proportional to 812,048.10, 1,218,240.24 and 243,406.23

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Solution

The fourth proportional to 812,048.10, 1,218,240.24 and 243,406.23 is: 365,159.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,048.10 : 1,218,240.24 = 243,406.23 : x
  2. Step 2: Convert to fraction form
    812,048.10/1,218,240.24 = 243,406.23/x
  3. Step 3: Cross multiply
    812,048.10x = 1,218,240.24 × 243,406.23
  4. Step 4: Simplify right side
    812,048.10x = 296,527,257,961.49
  5. Step 5: Solve for x
    x = 296,527,257,961.49/812,048.10
  6. Step 6: Final answer
    x = 365,159.72

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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.