Home / 1,687,308.78-2,531,334.96-489,281.10

Finding the Fourth Proportional to 1,687,308.78, 2,531,334.96 and 489,281.10

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Solution

The fourth proportional to 1,687,308.78, 2,531,334.96 and 489,281.10 is: 734,029.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,687,308.78 : 2,531,334.96 = 489,281.10 : x
  2. Step 2: Convert to fraction form
    1,687,308.78/2,531,334.96 = 489,281.10/x
  3. Step 3: Cross multiply
    1,687,308.78x = 2,531,334.96 × 489,281.10
  4. Step 4: Simplify right side
    1,687,308.78x = 1,238,534,353,697.26
  5. Step 5: Solve for x
    x = 1,238,534,353,697.26/1,687,308.78
  6. Step 6: Final answer
    x = 734,029.46

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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.