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Finding the Fourth Proportional to 408,747.60, 612,246.60 and 338,763.60

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Solution

The fourth proportional to 408,747.60, 612,246.60 and 338,763.60 is: 507,420.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,747.60 : 612,246.60 = 338,763.60 : x
  2. Step 2: Convert to fraction form
    408,747.60/612,246.60 = 338,763.60/x
  3. Step 3: Cross multiply
    408,747.60x = 612,246.60 × 338,763.60
  4. Step 4: Simplify right side
    408,747.60x = 207,406,862,303.76
  5. Step 5: Solve for x
    x = 207,406,862,303.76/408,747.60
  6. Step 6: Final answer
    x = 507,420.38

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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.