Home / 665,944.16-918,217.68-538,224.80

Finding the Fourth Proportional to 665,944.16, 918,217.68 and 538,224.80

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Solution

The fourth proportional to 665,944.16, 918,217.68 and 538,224.80 is: 742,115.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,944.16 : 918,217.68 = 538,224.80 : x
  2. Step 2: Convert to fraction form
    665,944.16/918,217.68 = 538,224.80/x
  3. Step 3: Cross multiply
    665,944.16x = 918,217.68 × 538,224.80
  4. Step 4: Simplify right side
    665,944.16x = 494,207,527,174.46
  5. Step 5: Solve for x
    x = 494,207,527,174.46/665,944.16
  6. Step 6: Final answer
    x = 742,115.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.