Home / 1,282,005.40-1,920,473.70-1,124,411.80

Finding the Fourth Proportional to 1,282,005.40, 1,920,473.70 and 1,124,411.80

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Solution

The fourth proportional to 1,282,005.40, 1,920,473.70 and 1,124,411.80 is: 1,684,394.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,282,005.40 : 1,920,473.70 = 1,124,411.80 : x
  2. Step 2: Convert to fraction form
    1,282,005.40/1,920,473.70 = 1,124,411.80/x
  3. Step 3: Cross multiply
    1,282,005.40x = 1,920,473.70 × 1,124,411.80
  4. Step 4: Simplify right side
    1,282,005.40x = 2,159,403,289,869.66
  5. Step 5: Solve for x
    x = 2,159,403,289,869.66/1,282,005.40
  6. Step 6: Final answer
    x = 1,684,394.85

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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.