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Finding the Fourth Proportional to 486,499.01, 670,999.16 and 418,629.71

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Solution

The fourth proportional to 486,499.01, 670,999.16 and 418,629.71 is: 577,391.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,499.01 : 670,999.16 = 418,629.71 : x
  2. Step 2: Convert to fraction form
    486,499.01/670,999.16 = 418,629.71/x
  3. Step 3: Cross multiply
    486,499.01x = 670,999.16 × 418,629.71
  4. Step 4: Simplify right side
    486,499.01x = 280,900,178,312.90
  5. Step 5: Solve for x
    x = 280,900,178,312.90/486,499.01
  6. Step 6: Final answer
    x = 577,391.06

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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.