Home / 851,690.28-1,277,485.02-319,166.76

Finding the Fourth Proportional to 851,690.28, 1,277,485.02 and 319,166.76

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Solution

The fourth proportional to 851,690.28, 1,277,485.02 and 319,166.76 is: 478,731.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,690.28 : 1,277,485.02 = 319,166.76 : x
  2. Step 2: Convert to fraction form
    851,690.28/1,277,485.02 = 319,166.76/x
  3. Step 3: Cross multiply
    851,690.28x = 1,277,485.02 × 319,166.76
  4. Step 4: Simplify right side
    851,690.28x = 407,730,754,781.94
  5. Step 5: Solve for x
    x = 407,730,754,781.94/851,690.28
  6. Step 6: Final answer
    x = 478,731.25

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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.