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Finding the Fourth Proportional to 887,774, 1,225,158.36 and 485,391.92

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Solution

The fourth proportional to 887,774, 1,225,158.36 and 485,391.92 is: 669,857.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,774 : 1,225,158.36 = 485,391.92 : x
  2. Step 2: Convert to fraction form
    887,774/1,225,158.36 = 485,391.92/x
  3. Step 3: Cross multiply
    887,774x = 1,225,158.36 × 485,391.92
  4. Step 4: Simplify right side
    887,774x = 594,681,968,664.45
  5. Step 5: Solve for x
    x = 594,681,968,664.45/887,774
  6. Step 6: Final answer
    x = 669,857.38

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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.