Home / 550,127.80-759,490.50-420,827.68

Finding the Fourth Proportional to 550,127.80, 759,490.50 and 420,827.68

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Solution

The fourth proportional to 550,127.80, 759,490.50 and 420,827.68 is: 580,982.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,127.80 : 759,490.50 = 420,827.68 : x
  2. Step 2: Convert to fraction form
    550,127.80/759,490.50 = 420,827.68/x
  3. Step 3: Cross multiply
    550,127.80x = 759,490.50 × 420,827.68
  4. Step 4: Simplify right side
    550,127.80x = 319,614,625,097.04
  5. Step 5: Solve for x
    x = 319,614,625,097.04/550,127.80
  6. Step 6: Final answer
    x = 580,982.50

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1.5x scale

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.