Home / 487,541.40-731,312.10-443,995.80

Finding the Fourth Proportional to 487,541.40, 731,312.10 and 443,995.80

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Solution

The fourth proportional to 487,541.40, 731,312.10 and 443,995.80 is: 665,993.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,541.40 : 731,312.10 = 443,995.80 : x
  2. Step 2: Convert to fraction form
    487,541.40/731,312.10 = 443,995.80/x
  3. Step 3: Cross multiply
    487,541.40x = 731,312.10 × 443,995.80
  4. Step 4: Simplify right side
    487,541.40x = 324,699,500,889.18
  5. Step 5: Solve for x
    x = 324,699,500,889.18/487,541.40
  6. Step 6: Final answer
    x = 665,993.70

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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.