Home / 771,703.20-1,155,999.60-519,760.80

Finding the Fourth Proportional to 771,703.20, 1,155,999.60 and 519,760.80

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Solution

The fourth proportional to 771,703.20, 1,155,999.60 and 519,760.80 is: 778,593.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,703.20 : 1,155,999.60 = 519,760.80 : x
  2. Step 2: Convert to fraction form
    771,703.20/1,155,999.60 = 519,760.80/x
  3. Step 3: Cross multiply
    771,703.20x = 1,155,999.60 × 519,760.80
  4. Step 4: Simplify right side
    771,703.20x = 600,843,276,895.68
  5. Step 5: Solve for x
    x = 600,843,276,895.68/771,703.20
  6. Step 6: Final answer
    x = 778,593.74

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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.