Home / 1,277,681.40-1,915,209.90-744,928.20

Finding the Fourth Proportional to 1,277,681.40, 1,915,209.90 and 744,928.20

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Solution

The fourth proportional to 1,277,681.40, 1,915,209.90 and 744,928.20 is: 1,116,627.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277,681.40 : 1,915,209.90 = 744,928.20 : x
  2. Step 2: Convert to fraction form
    1,277,681.40/1,915,209.90 = 744,928.20/x
  3. Step 3: Cross multiply
    1,277,681.40x = 1,915,209.90 × 744,928.20
  4. Step 4: Simplify right side
    1,277,681.40x = 1,426,693,863,429.18
  5. Step 5: Solve for x
    x = 1,426,693,863,429.18/1,277,681.40
  6. Step 6: Final answer
    x = 1,116,627.25

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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.