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Finding the Fourth Proportional to 540,388.72, 810,581.80 and 507,505.80

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Solution

The fourth proportional to 540,388.72, 810,581.80 and 507,505.80 is: 761,257.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,388.72 : 810,581.80 = 507,505.80 : x
  2. Step 2: Convert to fraction form
    540,388.72/810,581.80 = 507,505.80/x
  3. Step 3: Cross multiply
    540,388.72x = 810,581.80 × 507,505.80
  4. Step 4: Simplify right side
    540,388.72x = 411,374,964,874.44
  5. Step 5: Solve for x
    x = 411,374,964,874.44/540,388.72
  6. Step 6: Final answer
    x = 761,257.50

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Double scale
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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.