Home / 1,287,999.90-1,932,959.70-490,838.40

Finding the Fourth Proportional to 1,287,999.90, 1,932,959.70 and 490,838.40

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Solution

The fourth proportional to 1,287,999.90, 1,932,959.70 and 490,838.40 is: 736,623.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,999.90 : 1,932,959.70 = 490,838.40 : x
  2. Step 2: Convert to fraction form
    1,287,999.90/1,932,959.70 = 490,838.40/x
  3. Step 3: Cross multiply
    1,287,999.90x = 1,932,959.70 × 490,838.40
  4. Step 4: Simplify right side
    1,287,999.90x = 948,770,846,412.48
  5. Step 5: Solve for x
    x = 948,770,846,412.48/1,287,999.90
  6. Step 6: Final answer
    x = 736,623.39

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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.