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Finding the Fourth Proportional to 540,001.80, 810,002.70 and 398,284.20

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Solution

The fourth proportional to 540,001.80, 810,002.70 and 398,284.20 is: 597,426.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,001.80 : 810,002.70 = 398,284.20 : x
  2. Step 2: Convert to fraction form
    540,001.80/810,002.70 = 398,284.20/x
  3. Step 3: Cross multiply
    540,001.80x = 810,002.70 × 398,284.20
  4. Step 4: Simplify right side
    540,001.80x = 322,611,277,367.34
  5. Step 5: Solve for x
    x = 322,611,277,367.34/540,001.80
  6. Step 6: Final answer
    x = 597,426.30

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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.