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Finding the Fourth Proportional to 679,969.10, 1,019,953.65 and 606,485.90

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Solution

The fourth proportional to 679,969.10, 1,019,953.65 and 606,485.90 is: 909,728.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,969.10 : 1,019,953.65 = 606,485.90 : x
  2. Step 2: Convert to fraction form
    679,969.10/1,019,953.65 = 606,485.90/x
  3. Step 3: Cross multiply
    679,969.10x = 1,019,953.65 × 606,485.90
  4. Step 4: Simplify right side
    679,969.10x = 618,587,507,378.54
  5. Step 5: Solve for x
    x = 618,587,507,378.54/679,969.10
  6. Step 6: Final answer
    x = 909,728.85

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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.