Home / 909,911.40-1,364,867.10-278,743.20

Finding the Fourth Proportional to 909,911.40, 1,364,867.10 and 278,743.20

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Solution

The fourth proportional to 909,911.40, 1,364,867.10 and 278,743.20 is: 418,114.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,911.40 : 1,364,867.10 = 278,743.20 : x
  2. Step 2: Convert to fraction form
    909,911.40/1,364,867.10 = 278,743.20/x
  3. Step 3: Cross multiply
    909,911.40x = 1,364,867.10 × 278,743.20
  4. Step 4: Simplify right side
    909,911.40x = 380,447,423,028.72
  5. Step 5: Solve for x
    x = 380,447,423,028.72/909,911.40
  6. Step 6: Final answer
    x = 418,114.80

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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.