Home / 909,987.60-1,364,981.40-278,819.40

Finding the Fourth Proportional to 909,987.60, 1,364,981.40 and 278,819.40

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Solution

The fourth proportional to 909,987.60, 1,364,981.40 and 278,819.40 is: 418,229.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,987.60 : 1,364,981.40 = 278,819.40 : x
  2. Step 2: Convert to fraction form
    909,987.60/1,364,981.40 = 278,819.40/x
  3. Step 3: Cross multiply
    909,987.60x = 1,364,981.40 × 278,819.40
  4. Step 4: Simplify right side
    909,987.60x = 380,583,294,959.16
  5. Step 5: Solve for x
    x = 380,583,294,959.16/909,987.60
  6. Step 6: Final answer
    x = 418,229.10

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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.