Home / 1,275,681.20-1,913,521.80-743,802.80

Finding the Fourth Proportional to 1,275,681.20, 1,913,521.80 and 743,802.80

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Solution

The fourth proportional to 1,275,681.20, 1,913,521.80 and 743,802.80 is: 1,115,704.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275,681.20 : 1,913,521.80 = 743,802.80 : x
  2. Step 2: Convert to fraction form
    1,275,681.20/1,913,521.80 = 743,802.80/x
  3. Step 3: Cross multiply
    1,275,681.20x = 1,913,521.80 × 743,802.80
  4. Step 4: Simplify right side
    1,275,681.20x = 1,423,282,872,701.04
  5. Step 5: Solve for x
    x = 1,423,282,872,701.04/1,275,681.20
  6. Step 6: Final answer
    x = 1,115,704.20

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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.