Home / 738,272.80-1,107,351.60-288,906.40

Finding the Fourth Proportional to 738,272.80, 1,107,351.60 and 288,906.40

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Solution

The fourth proportional to 738,272.80, 1,107,351.60 and 288,906.40 is: 433,337.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,272.80 : 1,107,351.60 = 288,906.40 : x
  2. Step 2: Convert to fraction form
    738,272.80/1,107,351.60 = 288,906.40/x
  3. Step 3: Cross multiply
    738,272.80x = 1,107,351.60 × 288,906.40
  4. Step 4: Simplify right side
    738,272.80x = 319,920,964,290.24
  5. Step 5: Solve for x
    x = 319,920,964,290.24/738,272.80
  6. Step 6: Final answer
    x = 433,337.06

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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.