Home / 1,284,820.40-1,927,230.60-386,400.80

Finding the Fourth Proportional to 1,284,820.40, 1,927,230.60 and 386,400.80

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Solution

The fourth proportional to 1,284,820.40, 1,927,230.60 and 386,400.80 is: 579,601.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284,820.40 : 1,927,230.60 = 386,400.80 : x
  2. Step 2: Convert to fraction form
    1,284,820.40/1,927,230.60 = 386,400.80/x
  3. Step 3: Cross multiply
    1,284,820.40x = 1,927,230.60 × 386,400.80
  4. Step 4: Simplify right side
    1,284,820.40x = 744,683,445,624.48
  5. Step 5: Solve for x
    x = 744,683,445,624.48/1,284,820.40
  6. Step 6: Final answer
    x = 579,601.20

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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.