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Finding the Fourth Proportional to 667,904.32, 921,802.44 and 413,337.52

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Solution

The fourth proportional to 667,904.32, 921,802.44 and 413,337.52 is: 570,464.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,904.32 : 921,802.44 = 413,337.52 : x
  2. Step 2: Convert to fraction form
    667,904.32/921,802.44 = 413,337.52/x
  3. Step 3: Cross multiply
    667,904.32x = 921,802.44 × 413,337.52
  4. Step 4: Simplify right side
    667,904.32x = 381,015,534,479.55
  5. Step 5: Solve for x
    x = 381,015,534,479.55/667,904.32
  6. Step 6: Final answer
    x = 570,464.25

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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.