Home / 838,143.30-1,156,637.76-456,172.86

Finding the Fourth Proportional to 838,143.30, 1,156,637.76 and 456,172.86

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Solution

The fourth proportional to 838,143.30, 1,156,637.76 and 456,172.86 is: 629,518.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,143.30 : 1,156,637.76 = 456,172.86 : x
  2. Step 2: Convert to fraction form
    838,143.30/1,156,637.76 = 456,172.86/x
  3. Step 3: Cross multiply
    838,143.30x = 1,156,637.76 × 456,172.86
  4. Step 4: Simplify right side
    838,143.30x = 527,626,754,963.19
  5. Step 5: Solve for x
    x = 527,626,754,963.19/838,143.30
  6. Step 6: Final answer
    x = 629,518.55

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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.