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Finding the Fourth Proportional to 540,995.20, 811,492.80 and 260,444.80

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Solution

The fourth proportional to 540,995.20, 811,492.80 and 260,444.80 is: 390,667.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,995.20 : 811,492.80 = 260,444.80 : x
  2. Step 2: Convert to fraction form
    540,995.20/811,492.80 = 260,444.80/x
  3. Step 3: Cross multiply
    540,995.20x = 811,492.80 × 260,444.80
  4. Step 4: Simplify right side
    540,995.20x = 211,349,079,997.44
  5. Step 5: Solve for x
    x = 211,349,079,997.44/540,995.20
  6. Step 6: Final answer
    x = 390,667.20

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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.