Home / 1,280,127.80-1,920,191.70-808,902.20

Finding the Fourth Proportional to 1,280,127.80, 1,920,191.70 and 808,902.20

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Solution

The fourth proportional to 1,280,127.80, 1,920,191.70 and 808,902.20 is: 1,213,353.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,127.80 : 1,920,191.70 = 808,902.20 : x
  2. Step 2: Convert to fraction form
    1,280,127.80/1,920,191.70 = 808,902.20/x
  3. Step 3: Cross multiply
    1,280,127.80x = 1,920,191.70 × 808,902.20
  4. Step 4: Simplify right side
    1,280,127.80x = 1,553,247,290,551.74
  5. Step 5: Solve for x
    x = 1,553,247,290,551.74/1,280,127.80
  6. Step 6: Final answer
    x = 1,213,353.30

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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.