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Finding the Fourth Proportional to 724,606.76, 999,986.10 and 418,673

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Solution

The fourth proportional to 724,606.76, 999,986.10 and 418,673 is: 577,785.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,606.76 : 999,986.10 = 418,673 : x
  2. Step 2: Convert to fraction form
    724,606.76/999,986.10 = 418,673/x
  3. Step 3: Cross multiply
    724,606.76x = 999,986.10 × 418,673
  4. Step 4: Simplify right side
    724,606.76x = 418,667,180,445.30
  5. Step 5: Solve for x
    x = 418,667,180,445.30/724,606.76
  6. Step 6: Final answer
    x = 577,785.36

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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.