Home / 742,638.89-1,024,766.87-420,292.87

Finding the Fourth Proportional to 742,638.89, 1,024,766.87 and 420,292.87

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Solution

The fourth proportional to 742,638.89, 1,024,766.87 and 420,292.87 is: 579,961.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,638.89 : 1,024,766.87 = 420,292.87 : x
  2. Step 2: Convert to fraction form
    742,638.89/1,024,766.87 = 420,292.87/x
  3. Step 3: Cross multiply
    742,638.89x = 1,024,766.87 × 420,292.87
  4. Step 4: Simplify right side
    742,638.89x = 430,702,207,362.03
  5. Step 5: Solve for x
    x = 430,702,207,362.03/742,638.89
  6. Step 6: Final answer
    x = 579,961.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.