Home / 1,187,989.32-1,781,803.55-389,253.18

Finding the Fourth Proportional to 1,187,989.32, 1,781,803.55 and 389,253.18

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Solution

The fourth proportional to 1,187,989.32, 1,781,803.55 and 389,253.18 is: 583,820.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,989.32 : 1,781,803.55 = 389,253.18 : x
  2. Step 2: Convert to fraction form
    1,187,989.32/1,781,803.55 = 389,253.18/x
  3. Step 3: Cross multiply
    1,187,989.32x = 1,781,803.55 × 389,253.18
  4. Step 4: Simplify right side
    1,187,989.32x = 693,572,696,026.52
  5. Step 5: Solve for x
    x = 693,572,696,026.52/1,187,989.32
  6. Step 6: Final answer
    x = 583,820.65

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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.