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Finding the Fourth Proportional to 765,630.42, 1,056,630.99 and 443,346.20

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Solution

The fourth proportional to 765,630.42, 1,056,630.99 and 443,346.20 is: 611,853.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,630.42 : 1,056,630.99 = 443,346.20 : x
  2. Step 2: Convert to fraction form
    765,630.42/1,056,630.99 = 443,346.20/x
  3. Step 3: Cross multiply
    765,630.42x = 1,056,630.99 × 443,346.20
  4. Step 4: Simplify right side
    765,630.42x = 468,453,334,218.74
  5. Step 5: Solve for x
    x = 468,453,334,218.74/765,630.42
  6. Step 6: Final answer
    x = 611,853.08

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.