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Finding the Fourth Proportional to 723,191.32, 998,004 and 400,900.60

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Solution

The fourth proportional to 723,191.32, 998,004 and 400,900.60 is: 553,242.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,191.32 : 998,004 = 400,900.60 : x
  2. Step 2: Convert to fraction form
    723,191.32/998,004 = 400,900.60/x
  3. Step 3: Cross multiply
    723,191.32x = 998,004 × 400,900.60
  4. Step 4: Simplify right side
    723,191.32x = 400,100,402,402.40
  5. Step 5: Solve for x
    x = 400,100,402,402.40/723,191.32
  6. Step 6: Final answer
    x = 553,242.82

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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.