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Finding the Fourth Proportional to 887,663.70, 1,331,495.55 and 355,266.90

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Solution

The fourth proportional to 887,663.70, 1,331,495.55 and 355,266.90 is: 532,900.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,663.70 : 1,331,495.55 = 355,266.90 : x
  2. Step 2: Convert to fraction form
    887,663.70/1,331,495.55 = 355,266.90/x
  3. Step 3: Cross multiply
    887,663.70x = 1,331,495.55 × 355,266.90
  4. Step 4: Simplify right side
    887,663.70x = 473,036,296,412.30
  5. Step 5: Solve for x
    x = 473,036,296,412.30/887,663.70
  6. Step 6: Final answer
    x = 532,900.35

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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.