Home / 781,063.83-1,077,560.10-490,504.50

Finding the Fourth Proportional to 781,063.83, 1,077,560.10 and 490,504.50

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Solution

The fourth proportional to 781,063.83, 1,077,560.10 and 490,504.50 is: 676,702.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,063.83 : 1,077,560.10 = 490,504.50 : x
  2. Step 2: Convert to fraction form
    781,063.83/1,077,560.10 = 490,504.50/x
  3. Step 3: Cross multiply
    781,063.83x = 1,077,560.10 × 490,504.50
  4. Step 4: Simplify right side
    781,063.83x = 528,548,078,070.45
  5. Step 5: Solve for x
    x = 528,548,078,070.45/781,063.83
  6. Step 6: Final answer
    x = 676,702.80

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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.