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Finding the Fourth Proportional to 607,795.20, 910,380.60 and 395,218.80

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Solution

The fourth proportional to 607,795.20, 910,380.60 and 395,218.80 is: 591,974.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,795.20 : 910,380.60 = 395,218.80 : x
  2. Step 2: Convert to fraction form
    607,795.20/910,380.60 = 395,218.80/x
  3. Step 3: Cross multiply
    607,795.20x = 910,380.60 × 395,218.80
  4. Step 4: Simplify right side
    607,795.20x = 359,799,528,275.28
  5. Step 5: Solve for x
    x = 359,799,528,275.28/607,795.20
  6. Step 6: Final answer
    x = 591,974.94

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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.