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Finding the Fourth Proportional to 723,410.64, 998,289.72 and 401,117.76

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Solution

The fourth proportional to 723,410.64, 998,289.72 and 401,117.76 is: 553,533.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,410.64 : 998,289.72 = 401,117.76 : x
  2. Step 2: Convert to fraction form
    723,410.64/998,289.72 = 401,117.76/x
  3. Step 3: Cross multiply
    723,410.64x = 998,289.72 × 401,117.76
  4. Step 4: Simplify right side
    723,410.64x = 400,431,736,317.43
  5. Step 5: Solve for x
    x = 400,431,736,317.43/723,410.64
  6. Step 6: Final answer
    x = 553,533.10

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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.