Home / 772,406.80-1,158,610.20-457,219.60

Finding the Fourth Proportional to 772,406.80, 1,158,610.20 and 457,219.60

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Solution

The fourth proportional to 772,406.80, 1,158,610.20 and 457,219.60 is: 685,829.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,406.80 : 1,158,610.20 = 457,219.60 : x
  2. Step 2: Convert to fraction form
    772,406.80/1,158,610.20 = 457,219.60/x
  3. Step 3: Cross multiply
    772,406.80x = 1,158,610.20 × 457,219.60
  4. Step 4: Simplify right side
    772,406.80x = 529,739,292,199.92
  5. Step 5: Solve for x
    x = 529,739,292,199.92/772,406.80
  6. Step 6: Final answer
    x = 685,829.40

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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.