Home / 781,866.38-1,078,968.30-442,334.63

Finding the Fourth Proportional to 781,866.38, 1,078,968.30 and 442,334.63

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Solution

The fourth proportional to 781,866.38, 1,078,968.30 and 442,334.63 is: 610,417.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,866.38 : 1,078,968.30 = 442,334.63 : x
  2. Step 2: Convert to fraction form
    781,866.38/1,078,968.30 = 442,334.63/x
  3. Step 3: Cross multiply
    781,866.38x = 1,078,968.30 × 442,334.63
  4. Step 4: Simplify right side
    781,866.38x = 477,265,043,762.23
  5. Step 5: Solve for x
    x = 477,265,043,762.23/781,866.38
  6. Step 6: Final answer
    x = 610,417.66

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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.