Home / 489,134.90-674,720.18-307,559.36

Finding the Fourth Proportional to 489,134.90, 674,720.18 and 307,559.36

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Solution

The fourth proportional to 489,134.90, 674,720.18 and 307,559.36 is: 424,252.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,134.90 : 674,720.18 = 307,559.36 : x
  2. Step 2: Convert to fraction form
    489,134.90/674,720.18 = 307,559.36/x
  3. Step 3: Cross multiply
    489,134.90x = 674,720.18 × 307,559.36
  4. Step 4: Simplify right side
    489,134.90x = 207,516,506,739.89
  5. Step 5: Solve for x
    x = 207,516,506,739.89/489,134.90
  6. Step 6: Final answer
    x = 424,252.10

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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.