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Finding the Fourth Proportional to 1,314,570.80, 1,973,411.40 and 746,404.40

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Solution

The fourth proportional to 1,314,570.80, 1,973,411.40 and 746,404.40 is: 1,120,489.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,314,570.80 : 1,973,411.40 = 746,404.40 : x
  2. Step 2: Convert to fraction form
    1,314,570.80/1,973,411.40 = 746,404.40/x
  3. Step 3: Cross multiply
    1,314,570.80x = 1,973,411.40 × 746,404.40
  4. Step 4: Simplify right side
    1,314,570.80x = 1,472,962,951,970.16
  5. Step 5: Solve for x
    x = 1,472,962,951,970.16/1,314,570.80
  6. Step 6: Final answer
    x = 1,120,489.63

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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.