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Finding the Fourth Proportional to 723,607.87, 998,612.20 and 401,298.76

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Solution

The fourth proportional to 723,607.87, 998,612.20 and 401,298.76 is: 553,810.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,607.87 : 998,612.20 = 401,298.76 : x
  2. Step 2: Convert to fraction form
    723,607.87/998,612.20 = 401,298.76/x
  3. Step 3: Cross multiply
    723,607.87x = 998,612.20 × 401,298.76
  4. Step 4: Simplify right side
    723,607.87x = 400,741,835,574.38
  5. Step 5: Solve for x
    x = 400,741,835,574.38/723,607.87
  6. Step 6: Final answer
    x = 553,810.78

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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.