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Finding the Fourth Proportional to 679,960.10, 1,019,940.15 and 606,476.90

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Solution

The fourth proportional to 679,960.10, 1,019,940.15 and 606,476.90 is: 909,715.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,960.10 : 1,019,940.15 = 606,476.90 : x
  2. Step 2: Convert to fraction form
    679,960.10/1,019,940.15 = 606,476.90/x
  3. Step 3: Cross multiply
    679,960.10x = 1,019,940.15 × 606,476.90
  4. Step 4: Simplify right side
    679,960.10x = 618,570,140,357.54
  5. Step 5: Solve for x
    x = 618,570,140,357.54/679,960.10
  6. Step 6: Final answer
    x = 909,715.35

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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.