Home / 1,267,223.40-1,897,335.90-987,287.40

Finding the Fourth Proportional to 1,267,223.40, 1,897,335.90 and 987,287.40

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Solution

The fourth proportional to 1,267,223.40, 1,897,335.90 and 987,287.40 is: 1,478,204.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,267,223.40 : 1,897,335.90 = 987,287.40 : x
  2. Step 2: Convert to fraction form
    1,267,223.40/1,897,335.90 = 987,287.40/x
  3. Step 3: Cross multiply
    1,267,223.40x = 1,897,335.90 × 987,287.40
  4. Step 4: Simplify right side
    1,267,223.40x = 1,873,215,827,637.66
  5. Step 5: Solve for x
    x = 1,873,215,827,637.66/1,267,223.40
  6. Step 6: Final answer
    x = 1,478,204.89

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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.