Home / 781,622.60-1,172,822.70-308,323.40

Finding the Fourth Proportional to 781,622.60, 1,172,822.70 and 308,323.40

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Solution

The fourth proportional to 781,622.60, 1,172,822.70 and 308,323.40 is: 462,638.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,622.60 : 1,172,822.70 = 308,323.40 : x
  2. Step 2: Convert to fraction form
    781,622.60/1,172,822.70 = 308,323.40/x
  3. Step 3: Cross multiply
    781,622.60x = 1,172,822.70 × 308,323.40
  4. Step 4: Simplify right side
    781,622.60x = 361,608,682,461.18
  5. Step 5: Solve for x
    x = 361,608,682,461.18/781,622.60
  6. Step 6: Final answer
    x = 462,638.47

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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.