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Finding the Fourth Proportional to 978,842.95, 1,350,812.48 and 549,132.30

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Solution

The fourth proportional to 978,842.95, 1,350,812.48 and 549,132.30 is: 757,807.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,842.95 : 1,350,812.48 = 549,132.30 : x
  2. Step 2: Convert to fraction form
    978,842.95/1,350,812.48 = 549,132.30/x
  3. Step 3: Cross multiply
    978,842.95x = 1,350,812.48 × 549,132.30
  4. Step 4: Simplify right side
    978,842.95x = 741,774,764,011.10
  5. Step 5: Solve for x
    x = 741,774,764,011.10/978,842.95
  6. Step 6: Final answer
    x = 757,807.74

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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.