Home / 887,415.10-1,331,122.65-256,392.70

Finding the Fourth Proportional to 887,415.10, 1,331,122.65 and 256,392.70

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Solution

The fourth proportional to 887,415.10, 1,331,122.65 and 256,392.70 is: 384,589.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,415.10 : 1,331,122.65 = 256,392.70 : x
  2. Step 2: Convert to fraction form
    887,415.10/1,331,122.65 = 256,392.70/x
  3. Step 3: Cross multiply
    887,415.10x = 1,331,122.65 × 256,392.70
  4. Step 4: Simplify right side
    887,415.10x = 341,290,130,264.66
  5. Step 5: Solve for x
    x = 341,290,130,264.66/887,415.10
  6. Step 6: Final answer
    x = 384,589.05

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Double scale
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Similar ratio
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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.