Home / 1,187,612.40-1,781,393.67-289,059.15

Finding the Fourth Proportional to 1,187,612.40, 1,781,393.67 and 289,059.15

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Solution

The fourth proportional to 1,187,612.40, 1,781,393.67 and 289,059.15 is: 433,582.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,612.40 : 1,781,393.67 = 289,059.15 : x
  2. Step 2: Convert to fraction form
    1,187,612.40/1,781,393.67 = 289,059.15/x
  3. Step 3: Cross multiply
    1,187,612.40x = 1,781,393.67 × 289,059.15
  4. Step 4: Simplify right side
    1,187,612.40x = 514,928,140,065.58
  5. Step 5: Solve for x
    x = 514,928,140,065.58/1,187,612.40
  6. Step 6: Final answer
    x = 433,582.66

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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.