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Finding the Fourth Proportional to 978,845.34, 1,350,815.79 and 549,134.70

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Solution

The fourth proportional to 978,845.34, 1,350,815.79 and 549,134.70 is: 757,811.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,845.34 : 1,350,815.79 = 549,134.70 : x
  2. Step 2: Convert to fraction form
    978,845.34/1,350,815.79 = 549,134.70/x
  3. Step 3: Cross multiply
    978,845.34x = 1,350,815.79 × 549,134.70
  4. Step 4: Simplify right side
    978,845.34x = 741,779,823,596.91
  5. Step 5: Solve for x
    x = 741,779,823,596.91/978,845.34
  6. Step 6: Final answer
    x = 757,811.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.