Home / 2,688,138.40-4,032,207.60-1,792,343.20

Finding the Fourth Proportional to 2,688,138.40, 4,032,207.60 and 1,792,343.20

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Solution

The fourth proportional to 2,688,138.40, 4,032,207.60 and 1,792,343.20 is: 2,688,514.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688,138.40 : 4,032,207.60 = 1,792,343.20 : x
  2. Step 2: Convert to fraction form
    2,688,138.40/4,032,207.60 = 1,792,343.20/x
  3. Step 3: Cross multiply
    2,688,138.40x = 4,032,207.60 × 1,792,343.20
  4. Step 4: Simplify right side
    2,688,138.40x = 7,227,099,872,848.32
  5. Step 5: Solve for x
    x = 7,227,099,872,848.32/2,688,138.40
  6. Step 6: Final answer
    x = 2,688,514.80

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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.