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Finding the Fourth Proportional to 890,885.88, 1,335,694.22 and 417,312.92

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Solution

The fourth proportional to 890,885.88, 1,335,694.22 and 417,312.92 is: 625,672.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,885.88 : 1,335,694.22 = 417,312.92 : x
  2. Step 2: Convert to fraction form
    890,885.88/1,335,694.22 = 417,312.92/x
  3. Step 3: Cross multiply
    890,885.88x = 1,335,694.22 × 417,312.92
  4. Step 4: Simplify right side
    890,885.88x = 557,402,455,175.32
  5. Step 5: Solve for x
    x = 557,402,455,175.32/890,885.88
  6. Step 6: Final answer
    x = 625,672.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.