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Finding the Fourth Proportional to 723,684.20, 998,803.77 and 401,498.10

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Solution

The fourth proportional to 723,684.20, 998,803.77 and 401,498.10 is: 554,133.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,684.20 : 998,803.77 = 401,498.10 : x
  2. Step 2: Convert to fraction form
    723,684.20/998,803.77 = 401,498.10/x
  3. Step 3: Cross multiply
    723,684.20x = 998,803.77 × 401,498.10
  4. Step 4: Simplify right side
    723,684.20x = 401,017,815,927.84
  5. Step 5: Solve for x
    x = 401,017,815,927.84/723,684.20
  6. Step 6: Final answer
    x = 554,133.72

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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.