Home / 1,687,985.60-2,531,580.96-489,591.68

Finding the Fourth Proportional to 1,687,985.60, 2,531,580.96 and 489,591.68

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Solution

The fourth proportional to 1,687,985.60, 2,531,580.96 and 489,591.68 is: 734,272.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,687,985.60 : 2,531,580.96 = 489,591.68 : x
  2. Step 2: Convert to fraction form
    1,687,985.60/2,531,580.96 = 489,591.68/x
  3. Step 3: Cross multiply
    1,687,985.60x = 2,531,580.96 × 489,591.68
  4. Step 4: Simplify right side
    1,687,985.60x = 1,239,440,975,262.41
  5. Step 5: Solve for x
    x = 1,239,440,975,262.41/1,687,985.60
  6. Step 6: Final answer
    x = 734,272.24

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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.