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Finding the Fourth Proportional to 486,331.71, 669,652.07 and 440,712.90

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Solution

The fourth proportional to 486,331.71, 669,652.07 and 440,712.90 is: 606,837.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,331.71 : 669,652.07 = 440,712.90 : x
  2. Step 2: Convert to fraction form
    486,331.71/669,652.07 = 440,712.90/x
  3. Step 3: Cross multiply
    486,331.71x = 669,652.07 × 440,712.90
  4. Step 4: Simplify right side
    486,331.71x = 295,124,303,557.14
  5. Step 5: Solve for x
    x = 295,124,303,557.14/486,331.71
  6. Step 6: Final answer
    x = 606,837.47

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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.