Home / 790,712.80-1,091,184.28-428,136.96

Finding the Fourth Proportional to 790,712.80, 1,091,184.28 and 428,136.96

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Solution

The fourth proportional to 790,712.80, 1,091,184.28 and 428,136.96 is: 590,829.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,712.80 : 1,091,184.28 = 428,136.96 : x
  2. Step 2: Convert to fraction form
    790,712.80/1,091,184.28 = 428,136.96/x
  3. Step 3: Cross multiply
    790,712.80x = 1,091,184.28 × 428,136.96
  4. Step 4: Simplify right side
    790,712.80x = 467,176,320,438.99
  5. Step 5: Solve for x
    x = 467,176,320,438.99/790,712.80
  6. Step 6: Final answer
    x = 590,829.34

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Double scale
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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.