Home / 680,940.10-1,021,300.80-207,515.35

Finding the Fourth Proportional to 680,940.10, 1,021,300.80 and 207,515.35

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Solution

The fourth proportional to 680,940.10, 1,021,300.80 and 207,515.35 is: 311,239.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,940.10 : 1,021,300.80 = 207,515.35 : x
  2. Step 2: Convert to fraction form
    680,940.10/1,021,300.80 = 207,515.35/x
  3. Step 3: Cross multiply
    680,940.10x = 1,021,300.80 × 207,515.35
  4. Step 4: Simplify right side
    680,940.10x = 211,935,592,967.28
  5. Step 5: Solve for x
    x = 211,935,592,967.28/680,940.10
  6. Step 6: Final answer
    x = 311,239.70

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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.