Home / 1,223,010.50-1,687,810.67-679,148.40

Finding the Fourth Proportional to 1,223,010.50, 1,687,810.67 and 679,148.40

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Solution

The fourth proportional to 1,223,010.50, 1,687,810.67 and 679,148.40 is: 937,255.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,010.50 : 1,687,810.67 = 679,148.40 : x
  2. Step 2: Convert to fraction form
    1,223,010.50/1,687,810.67 = 679,148.40/x
  3. Step 3: Cross multiply
    1,223,010.50x = 1,687,810.67 × 679,148.40
  4. Step 4: Simplify right side
    1,223,010.50x = 1,146,273,912,019.85
  5. Step 5: Solve for x
    x = 1,146,273,912,019.85/1,223,010.50
  6. Step 6: Final answer
    x = 937,255.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.