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Finding the Fourth Proportional to 854,462.40, 1,281,693.60 and 818,059.20

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Solution

The fourth proportional to 854,462.40, 1,281,693.60 and 818,059.20 is: 1,227,088.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,462.40 : 1,281,693.60 = 818,059.20 : x
  2. Step 2: Convert to fraction form
    854,462.40/1,281,693.60 = 818,059.20/x
  3. Step 3: Cross multiply
    854,462.40x = 1,281,693.60 × 818,059.20
  4. Step 4: Simplify right side
    854,462.40x = 1,048,501,241,061.12
  5. Step 5: Solve for x
    x = 1,048,501,241,061.12/854,462.40
  6. Step 6: Final answer
    x = 1,227,088.80

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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.