Home / 920,078.29-1,380,172.56-288,992.10

Finding the Fourth Proportional to 920,078.29, 1,380,172.56 and 288,992.10

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Solution

The fourth proportional to 920,078.29, 1,380,172.56 and 288,992.10 is: 433,505.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,078.29 : 1,380,172.56 = 288,992.10 : x
  2. Step 2: Convert to fraction form
    920,078.29/1,380,172.56 = 288,992.10/x
  3. Step 3: Cross multiply
    920,078.29x = 1,380,172.56 × 288,992.10
  4. Step 4: Simplify right side
    920,078.29x = 398,858,962,303.86
  5. Step 5: Solve for x
    x = 398,858,962,303.86/920,078.29
  6. Step 6: Final answer
    x = 433,505.46

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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.