Home / 12,949,387.20-19,424,080.80-4,428,446.40

Finding the Fourth Proportional to 12,949,387.20, 19,424,080.80 and 4,428,446.40

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Solution

The fourth proportional to 12,949,387.20, 19,424,080.80 and 4,428,446.40 is: 6,642,669.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,949,387.20 : 19,424,080.80 = 4,428,446.40 : x
  2. Step 2: Convert to fraction form
    12,949,387.20/19,424,080.80 = 4,428,446.40/x
  3. Step 3: Cross multiply
    12,949,387.20x = 19,424,080.80 × 4,428,446.40
  4. Step 4: Simplify right side
    12,949,387.20x = 86,018,500,692,069.12
  5. Step 5: Solve for x
    x = 86,018,500,692,069.12/12,949,387.20
  6. Step 6: Final answer
    x = 6,642,669.60

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1.5x scale

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.