Home / 781,511.46-1,078,543.86-437,381.95

Finding the Fourth Proportional to 781,511.46, 1,078,543.86 and 437,381.95

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Solution

The fourth proportional to 781,511.46, 1,078,543.86 and 437,381.95 is: 603,619.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,511.46 : 1,078,543.86 = 437,381.95 : x
  2. Step 2: Convert to fraction form
    781,511.46/1,078,543.86 = 437,381.95/x
  3. Step 3: Cross multiply
    781,511.46x = 1,078,543.86 × 437,381.95
  4. Step 4: Simplify right side
    781,511.46x = 471,735,611,254.61
  5. Step 5: Solve for x
    x = 471,735,611,254.61/781,511.46
  6. Step 6: Final answer
    x = 603,619.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.