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Finding the Fourth Proportional to 978,246.45, 1,348,419.96 and 771,177.24

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Solution

The fourth proportional to 978,246.45, 1,348,419.96 and 771,177.24 is: 1,062,994.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,246.45 : 1,348,419.96 = 771,177.24 : x
  2. Step 2: Convert to fraction form
    978,246.45/1,348,419.96 = 771,177.24/x
  3. Step 3: Cross multiply
    978,246.45x = 1,348,419.96 × 771,177.24
  4. Step 4: Simplify right side
    978,246.45x = 1,039,870,783,113.71
  5. Step 5: Solve for x
    x = 1,039,870,783,113.71/978,246.45
  6. Step 6: Final answer
    x = 1,062,994.69

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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.