Home / 697,086.80-1,045,630.20-620,979.20

Finding the Fourth Proportional to 697,086.80, 1,045,630.20 and 620,979.20

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Solution

The fourth proportional to 697,086.80, 1,045,630.20 and 620,979.20 is: 931,468.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,086.80 : 1,045,630.20 = 620,979.20 : x
  2. Step 2: Convert to fraction form
    697,086.80/1,045,630.20 = 620,979.20/x
  3. Step 3: Cross multiply
    697,086.80x = 1,045,630.20 × 620,979.20
  4. Step 4: Simplify right side
    697,086.80x = 649,314,605,091.84
  5. Step 5: Solve for x
    x = 649,314,605,091.84/697,086.80
  6. Step 6: Final answer
    x = 931,468.80

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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.