Home / 781,079.27-1,077,970.57-449,946.63

Finding the Fourth Proportional to 781,079.27, 1,077,970.57 and 449,946.63

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Solution

The fourth proportional to 781,079.27, 1,077,970.57 and 449,946.63 is: 620,973.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,079.27 : 1,077,970.57 = 449,946.63 : x
  2. Step 2: Convert to fraction form
    781,079.27/1,077,970.57 = 449,946.63/x
  3. Step 3: Cross multiply
    781,079.27x = 1,077,970.57 × 449,946.63
  4. Step 4: Simplify right side
    781,079.27x = 485,029,219,820.83
  5. Step 5: Solve for x
    x = 485,029,219,820.83/781,079.27
  6. Step 6: Final answer
    x = 620,973.11

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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.