Home / 1,280,542.20-1,920,813.30-1,031,710.20

Finding the Fourth Proportional to 1,280,542.20, 1,920,813.30 and 1,031,710.20

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Solution

The fourth proportional to 1,280,542.20, 1,920,813.30 and 1,031,710.20 is: 1,547,565.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,542.20 : 1,920,813.30 = 1,031,710.20 : x
  2. Step 2: Convert to fraction form
    1,280,542.20/1,920,813.30 = 1,031,710.20/x
  3. Step 3: Cross multiply
    1,280,542.20x = 1,920,813.30 × 1,031,710.20
  4. Step 4: Simplify right side
    1,280,542.20x = 1,981,722,673,905.66
  5. Step 5: Solve for x
    x = 1,981,722,673,905.66/1,280,542.20
  6. Step 6: Final answer
    x = 1,547,565.30

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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.