Home / 518,945.60-778,159.20-238,145.60

Finding the Fourth Proportional to 518,945.60, 778,159.20 and 238,145.60

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Solution

The fourth proportional to 518,945.60, 778,159.20 and 238,145.60 is: 357,099.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,945.60 : 778,159.20 = 238,145.60 : x
  2. Step 2: Convert to fraction form
    518,945.60/778,159.20 = 238,145.60/x
  3. Step 3: Cross multiply
    518,945.60x = 778,159.20 × 238,145.60
  4. Step 4: Simplify right side
    518,945.60x = 185,315,189,579.52
  5. Step 5: Solve for x
    x = 185,315,189,579.52/518,945.60
  6. Step 6: Final answer
    x = 357,099.45

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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.