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Finding the Fourth Proportional to 895,572.75, 1,235,872.71 and 487,679.61

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Solution

The fourth proportional to 895,572.75, 1,235,872.71 and 487,679.61 is: 672,988.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    895,572.75 : 1,235,872.71 = 487,679.61 : x
  2. Step 2: Convert to fraction form
    895,572.75/1,235,872.71 = 487,679.61/x
  3. Step 3: Cross multiply
    895,572.75x = 1,235,872.71 × 487,679.61
  4. Step 4: Simplify right side
    895,572.75x = 602,709,921,222.44
  5. Step 5: Solve for x
    x = 602,709,921,222.44/895,572.75
  6. Step 6: Final answer
    x = 672,988.23

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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.