Home / 783,095.80-1,174,643.70-428,801.80

Finding the Fourth Proportional to 783,095.80, 1,174,643.70 and 428,801.80

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Solution

The fourth proportional to 783,095.80, 1,174,643.70 and 428,801.80 is: 643,202.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,095.80 : 1,174,643.70 = 428,801.80 : x
  2. Step 2: Convert to fraction form
    783,095.80/1,174,643.70 = 428,801.80/x
  3. Step 3: Cross multiply
    783,095.80x = 1,174,643.70 × 428,801.80
  4. Step 4: Simplify right side
    783,095.80x = 503,689,332,918.66
  5. Step 5: Solve for x
    x = 503,689,332,918.66/783,095.80
  6. Step 6: Final answer
    x = 643,202.70

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Similar ratio
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1.5x scale

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.