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Finding the Fourth Proportional to 887,063.20, 1,330,594.80 and 512,648.80

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Solution

The fourth proportional to 887,063.20, 1,330,594.80 and 512,648.80 is: 768,973.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,063.20 : 1,330,594.80 = 512,648.80 : x
  2. Step 2: Convert to fraction form
    887,063.20/1,330,594.80 = 512,648.80/x
  3. Step 3: Cross multiply
    887,063.20x = 1,330,594.80 × 512,648.80
  4. Step 4: Simplify right side
    887,063.20x = 682,127,827,506.24
  5. Step 5: Solve for x
    x = 682,127,827,506.24/887,063.20
  6. Step 6: Final answer
    x = 768,973.20

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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.