Home / 485,623.10-727,657.05-319,216.70

Finding the Fourth Proportional to 485,623.10, 727,657.05 and 319,216.70

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Solution

The fourth proportional to 485,623.10, 727,657.05 and 319,216.70 is: 478,313.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,623.10 : 727,657.05 = 319,216.70 : x
  2. Step 2: Convert to fraction form
    485,623.10/727,657.05 = 319,216.70/x
  3. Step 3: Cross multiply
    485,623.10x = 727,657.05 × 319,216.70
  4. Step 4: Simplify right side
    485,623.10x = 232,280,282,232.74
  5. Step 5: Solve for x
    x = 232,280,282,232.74/485,623.10
  6. Step 6: Final answer
    x = 478,313.91

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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.