Home / 910,439.40-1,365,659.10-311,420.10

Finding the Fourth Proportional to 910,439.40, 1,365,659.10 and 311,420.10

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Solution

The fourth proportional to 910,439.40, 1,365,659.10 and 311,420.10 is: 467,130.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,439.40 : 1,365,659.10 = 311,420.10 : x
  2. Step 2: Convert to fraction form
    910,439.40/1,365,659.10 = 311,420.10/x
  3. Step 3: Cross multiply
    910,439.40x = 1,365,659.10 × 311,420.10
  4. Step 4: Simplify right side
    910,439.40x = 425,293,693,487.91
  5. Step 5: Solve for x
    x = 425,293,693,487.91/910,439.40
  6. Step 6: Final answer
    x = 467,130.15

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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.