Home / 909,926.40-1,364,954.40-278,839.20

Finding the Fourth Proportional to 909,926.40, 1,364,954.40 and 278,839.20

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Solution

The fourth proportional to 909,926.40, 1,364,954.40 and 278,839.20 is: 418,278.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,926.40 : 1,364,954.40 = 278,839.20 : x
  2. Step 2: Convert to fraction form
    909,926.40/1,364,954.40 = 278,839.20/x
  3. Step 3: Cross multiply
    909,926.40x = 1,364,954.40 × 278,839.20
  4. Step 4: Simplify right side
    909,926.40x = 380,602,792,932.48
  5. Step 5: Solve for x
    x = 380,602,792,932.48/909,926.40
  6. Step 6: Final answer
    x = 418,278.66

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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.