Home / 678,480.80-1,017,332.40-205,095.20

Finding the Fourth Proportional to 678,480.80, 1,017,332.40 and 205,095.20

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Solution

The fourth proportional to 678,480.80, 1,017,332.40 and 205,095.20 is: 307,525.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,480.80 : 1,017,332.40 = 205,095.20 : x
  2. Step 2: Convert to fraction form
    678,480.80/1,017,332.40 = 205,095.20/x
  3. Step 3: Cross multiply
    678,480.80x = 1,017,332.40 × 205,095.20
  4. Step 4: Simplify right side
    678,480.80x = 208,649,992,044.48
  5. Step 5: Solve for x
    x = 208,649,992,044.48/678,480.80
  6. Step 6: Final answer
    x = 307,525.27

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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.