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Finding the Fourth Proportional to 1,914,438.80, 2,870,275.80 and 1,073,248.40

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Solution

The fourth proportional to 1,914,438.80, 2,870,275.80 and 1,073,248.40 is: 1,609,097.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,914,438.80 : 2,870,275.80 = 1,073,248.40 : x
  2. Step 2: Convert to fraction form
    1,914,438.80/2,870,275.80 = 1,073,248.40/x
  3. Step 3: Cross multiply
    1,914,438.80x = 2,870,275.80 × 1,073,248.40
  4. Step 4: Simplify right side
    1,914,438.80x = 3,080,518,909,908.72
  5. Step 5: Solve for x
    x = 3,080,518,909,908.72/1,914,438.80
  6. Step 6: Final answer
    x = 1,609,097.62

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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.