Home / 786,118.23-1,178,887.23-280,543.95

Finding the Fourth Proportional to 786,118.23, 1,178,887.23 and 280,543.95

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Solution

The fourth proportional to 786,118.23, 1,178,887.23 and 280,543.95 is: 420,712.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,118.23 : 1,178,887.23 = 280,543.95 : x
  2. Step 2: Convert to fraction form
    786,118.23/1,178,887.23 = 280,543.95/x
  3. Step 3: Cross multiply
    786,118.23x = 1,178,887.23 × 280,543.95
  4. Step 4: Simplify right side
    786,118.23x = 330,729,680,108.76
  5. Step 5: Solve for x
    x = 330,729,680,108.76/786,118.23
  6. Step 6: Final answer
    x = 420,712.39

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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.