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Finding the Fourth Proportional to 723,149.85, 997,879.73 and 400,832.53

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Solution

The fourth proportional to 723,149.85, 997,879.73 and 400,832.53 is: 553,111.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,149.85 : 997,879.73 = 400,832.53 : x
  2. Step 2: Convert to fraction form
    723,149.85/997,879.73 = 400,832.53/x
  3. Step 3: Cross multiply
    723,149.85x = 997,879.73 × 400,832.53
  4. Step 4: Simplify right side
    723,149.85x = 399,982,652,312.76
  5. Step 5: Solve for x
    x = 399,982,652,312.76/723,149.85
  6. Step 6: Final answer
    x = 553,111.71

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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.