Home / 1,386,978.20-2,079,084.90-637,717.40

Finding the Fourth Proportional to 1,386,978.20, 2,079,084.90 and 637,717.40

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Solution

The fourth proportional to 1,386,978.20, 2,079,084.90 and 637,717.40 is: 955,940.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,978.20 : 2,079,084.90 = 637,717.40 : x
  2. Step 2: Convert to fraction form
    1,386,978.20/2,079,084.90 = 637,717.40/x
  3. Step 3: Cross multiply
    1,386,978.20x = 2,079,084.90 × 637,717.40
  4. Step 4: Simplify right side
    1,386,978.20x = 1,325,868,616,807.26
  5. Step 5: Solve for x
    x = 1,325,868,616,807.26/1,386,978.20
  6. Step 6: Final answer
    x = 955,940.49

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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.