Home / 887,135.70-1,330,703.55-487,570.80

Finding the Fourth Proportional to 887,135.70, 1,330,703.55 and 487,570.80

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Solution

The fourth proportional to 887,135.70, 1,330,703.55 and 487,570.80 is: 731,356.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,135.70 : 1,330,703.55 = 487,570.80 : x
  2. Step 2: Convert to fraction form
    887,135.70/1,330,703.55 = 487,570.80/x
  3. Step 3: Cross multiply
    887,135.70x = 1,330,703.55 × 487,570.80
  4. Step 4: Simplify right side
    887,135.70x = 648,812,194,436.34
  5. Step 5: Solve for x
    x = 648,812,194,436.34/887,135.70
  6. Step 6: Final answer
    x = 731,356.20

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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.