Home / 709,777.60-1,064,666.40-639,793.60

Finding the Fourth Proportional to 709,777.60, 1,064,666.40 and 639,793.60

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Solution

The fourth proportional to 709,777.60, 1,064,666.40 and 639,793.60 is: 959,690.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,777.60 : 1,064,666.40 = 639,793.60 : x
  2. Step 2: Convert to fraction form
    709,777.60/1,064,666.40 = 639,793.60/x
  3. Step 3: Cross multiply
    709,777.60x = 1,064,666.40 × 639,793.60
  4. Step 4: Simplify right side
    709,777.60x = 681,166,748,855.04
  5. Step 5: Solve for x
    x = 681,166,748,855.04/709,777.60
  6. Step 6: Final answer
    x = 959,690.40

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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.