Home / 7,287,780.40-10,938,304.28-3,878,928.88

Finding the Fourth Proportional to 7,287,780.40, 10,938,304.28 and 3,878,928.88

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Solution

The fourth proportional to 7,287,780.40, 10,938,304.28 and 3,878,928.88 is: 5,821,924.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,287,780.40 : 10,938,304.28 = 3,878,928.88 : x
  2. Step 2: Convert to fraction form
    7,287,780.40/10,938,304.28 = 3,878,928.88/x
  3. Step 3: Cross multiply
    7,287,780.40x = 10,938,304.28 × 3,878,928.88
  4. Step 4: Simplify right side
    7,287,780.40x = 42,428,904,369,919.60
  5. Step 5: Solve for x
    x = 42,428,904,369,919.60/7,287,780.40
  6. Step 6: Final answer
    x = 5,821,924.10

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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.