Home / 909,125.19-1,363,392.54-429,278.76

Finding the Fourth Proportional to 909,125.19, 1,363,392.54 and 429,278.76

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Solution

The fourth proportional to 909,125.19, 1,363,392.54 and 429,278.76 is: 643,778.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,125.19 : 1,363,392.54 = 429,278.76 : x
  2. Step 2: Convert to fraction form
    909,125.19/1,363,392.54 = 429,278.76/x
  3. Step 3: Cross multiply
    909,125.19x = 1,363,392.54 × 429,278.76
  4. Step 4: Simplify right side
    909,125.19x = 585,275,458,964.45
  5. Step 5: Solve for x
    x = 585,275,458,964.45/909,125.19
  6. Step 6: Final answer
    x = 643,778.73

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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.