Home / 804,638.70-1,207,879.65-472,401.90

Finding the Fourth Proportional to 804,638.70, 1,207,879.65 and 472,401.90

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Solution

The fourth proportional to 804,638.70, 1,207,879.65 and 472,401.90 is: 709,143.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,638.70 : 1,207,879.65 = 472,401.90 : x
  2. Step 2: Convert to fraction form
    804,638.70/1,207,879.65 = 472,401.90/x
  3. Step 3: Cross multiply
    804,638.70x = 1,207,879.65 × 472,401.90
  4. Step 4: Simplify right side
    804,638.70x = 570,604,641,631.34
  5. Step 5: Solve for x
    x = 570,604,641,631.34/804,638.70
  6. Step 6: Final answer
    x = 709,143.92

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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.