Home / 811,809.40-1,120,522.08-472,343.20

Finding the Fourth Proportional to 811,809.40, 1,120,522.08 and 472,343.20

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Solution

The fourth proportional to 811,809.40, 1,120,522.08 and 472,343.20 is: 651,964.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,809.40 : 1,120,522.08 = 472,343.20 : x
  2. Step 2: Convert to fraction form
    811,809.40/1,120,522.08 = 472,343.20/x
  3. Step 3: Cross multiply
    811,809.40x = 1,120,522.08 × 472,343.20
  4. Step 4: Simplify right side
    811,809.40x = 529,270,984,937.86
  5. Step 5: Solve for x
    x = 529,270,984,937.86/811,809.40
  6. Step 6: Final answer
    x = 651,964.59

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.