Home / 578,617.20-867,925.80-485,305.20

Finding the Fourth Proportional to 578,617.20, 867,925.80 and 485,305.20

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Solution

The fourth proportional to 578,617.20, 867,925.80 and 485,305.20 is: 727,957.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,617.20 : 867,925.80 = 485,305.20 : x
  2. Step 2: Convert to fraction form
    578,617.20/867,925.80 = 485,305.20/x
  3. Step 3: Cross multiply
    578,617.20x = 867,925.80 × 485,305.20
  4. Step 4: Simplify right side
    578,617.20x = 421,208,903,954.16
  5. Step 5: Solve for x
    x = 421,208,903,954.16/578,617.20
  6. Step 6: Final answer
    x = 727,957.80

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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.