Home / 1,287,903.80-1,931,769.30-341,254.20

Finding the Fourth Proportional to 1,287,903.80, 1,931,769.30 and 341,254.20

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Solution

The fourth proportional to 1,287,903.80, 1,931,769.30 and 341,254.20 is: 511,858.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,903.80 : 1,931,769.30 = 341,254.20 : x
  2. Step 2: Convert to fraction form
    1,287,903.80/1,931,769.30 = 341,254.20/x
  3. Step 3: Cross multiply
    1,287,903.80x = 1,931,769.30 × 341,254.20
  4. Step 4: Simplify right side
    1,287,903.80x = 659,224,387,056.06
  5. Step 5: Solve for x
    x = 659,224,387,056.06/1,287,903.80
  6. Step 6: Final answer
    x = 511,858.41

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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.