Home / 905,425.61-1,356,071.65-432,443.12

Finding the Fourth Proportional to 905,425.61, 1,356,071.65 and 432,443.12

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Solution

The fourth proportional to 905,425.61, 1,356,071.65 and 432,443.12 is: 647,677.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,425.61 : 1,356,071.65 = 432,443.12 : x
  2. Step 2: Convert to fraction form
    905,425.61/1,356,071.65 = 432,443.12/x
  3. Step 3: Cross multiply
    905,425.61x = 1,356,071.65 × 432,443.12
  4. Step 4: Simplify right side
    905,425.61x = 586,423,847,408.08
  5. Step 5: Solve for x
    x = 586,423,847,408.08/905,425.61
  6. Step 6: Final answer
    x = 647,677.56

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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.