Home / 698,756.20-1,048,134.30-647,434.60

Finding the Fourth Proportional to 698,756.20, 1,048,134.30 and 647,434.60

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Solution

The fourth proportional to 698,756.20, 1,048,134.30 and 647,434.60 is: 971,151.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,756.20 : 1,048,134.30 = 647,434.60 : x
  2. Step 2: Convert to fraction form
    698,756.20/1,048,134.30 = 647,434.60/x
  3. Step 3: Cross multiply
    698,756.20x = 1,048,134.30 × 647,434.60
  4. Step 4: Simplify right side
    698,756.20x = 678,598,411,266.78
  5. Step 5: Solve for x
    x = 678,598,411,266.78/698,756.20
  6. Step 6: Final answer
    x = 971,151.90

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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.