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Finding the Fourth Proportional to 867,630.60, 1,301,445.90 and 512,461.80

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Solution

The fourth proportional to 867,630.60, 1,301,445.90 and 512,461.80 is: 768,692.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,630.60 : 1,301,445.90 = 512,461.80 : x
  2. Step 2: Convert to fraction form
    867,630.60/1,301,445.90 = 512,461.80/x
  3. Step 3: Cross multiply
    867,630.60x = 1,301,445.90 × 512,461.80
  4. Step 4: Simplify right side
    867,630.60x = 666,941,308,516.62
  5. Step 5: Solve for x
    x = 666,941,308,516.62/867,630.60
  6. Step 6: Final answer
    x = 768,692.70

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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.