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Finding the Fourth Proportional to 573,323.40, 859,985.10 and 440,872.20

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Solution

The fourth proportional to 573,323.40, 859,985.10 and 440,872.20 is: 661,308.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,323.40 : 859,985.10 = 440,872.20 : x
  2. Step 2: Convert to fraction form
    573,323.40/859,985.10 = 440,872.20/x
  3. Step 3: Cross multiply
    573,323.40x = 859,985.10 × 440,872.20
  4. Step 4: Simplify right side
    573,323.40x = 379,143,523,004.22
  5. Step 5: Solve for x
    x = 379,143,523,004.22/573,323.40
  6. Step 6: Final answer
    x = 661,308.30

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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.