Home / 717,907.80-1,076,861.70-418,726.20

Finding the Fourth Proportional to 717,907.80, 1,076,861.70 and 418,726.20

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Solution

The fourth proportional to 717,907.80, 1,076,861.70 and 418,726.20 is: 628,089.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,907.80 : 1,076,861.70 = 418,726.20 : x
  2. Step 2: Convert to fraction form
    717,907.80/1,076,861.70 = 418,726.20/x
  3. Step 3: Cross multiply
    717,907.80x = 1,076,861.70 × 418,726.20
  4. Step 4: Simplify right side
    717,907.80x = 450,910,207,566.54
  5. Step 5: Solve for x
    x = 450,910,207,566.54/717,907.80
  6. Step 6: Final answer
    x = 628,089.30

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Double scale
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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.