Home / 450,121.02-620,874.32-288,720.42

Finding the Fourth Proportional to 450,121.02, 620,874.32 and 288,720.42

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Solution

The fourth proportional to 450,121.02, 620,874.32 and 288,720.42 is: 398,246.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,121.02 : 620,874.32 = 288,720.42 : x
  2. Step 2: Convert to fraction form
    450,121.02/620,874.32 = 288,720.42/x
  3. Step 3: Cross multiply
    450,121.02x = 620,874.32 × 288,720.42
  4. Step 4: Simplify right side
    450,121.02x = 179,259,094,437.61
  5. Step 5: Solve for x
    x = 179,259,094,437.61/450,121.02
  6. Step 6: Final answer
    x = 398,246.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.