Home / 1,287,811.30-1,931,630.55-341,161.70

Finding the Fourth Proportional to 1,287,811.30, 1,931,630.55 and 341,161.70

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Solution

The fourth proportional to 1,287,811.30, 1,931,630.55 and 341,161.70 is: 511,719.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,811.30 : 1,931,630.55 = 341,161.70 : x
  2. Step 2: Convert to fraction form
    1,287,811.30/1,931,630.55 = 341,161.70/x
  3. Step 3: Cross multiply
    1,287,811.30x = 1,931,630.55 × 341,161.70
  4. Step 4: Simplify right side
    1,287,811.30x = 658,998,362,209.94
  5. Step 5: Solve for x
    x = 658,998,362,209.94/1,287,811.30
  6. Step 6: Final answer
    x = 511,719.66

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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.