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Finding the Fourth Proportional to 723,587.72, 998,545.74 and 396,908.24

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Solution

The fourth proportional to 723,587.72, 998,545.74 and 396,908.24 is: 547,730.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,587.72 : 998,545.74 = 396,908.24 : x
  2. Step 2: Convert to fraction form
    723,587.72/998,545.74 = 396,908.24/x
  3. Step 3: Cross multiply
    723,587.72x = 998,545.74 × 396,908.24
  4. Step 4: Simplify right side
    723,587.72x = 396,331,032,222.90
  5. Step 5: Solve for x
    x = 396,331,032,222.90/723,587.72
  6. Step 6: Final answer
    x = 547,730.46

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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.