Home / 717,660.72-1,075,751.75-318,489.48

Finding the Fourth Proportional to 717,660.72, 1,075,751.75 and 318,489.48

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Solution

The fourth proportional to 717,660.72, 1,075,751.75 and 318,489.48 is: 477,406.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,660.72 : 1,075,751.75 = 318,489.48 : x
  2. Step 2: Convert to fraction form
    717,660.72/1,075,751.75 = 318,489.48/x
  3. Step 3: Cross multiply
    717,660.72x = 1,075,751.75 × 318,489.48
  4. Step 4: Simplify right side
    717,660.72x = 342,615,616,563.52
  5. Step 5: Solve for x
    x = 342,615,616,563.52/717,660.72
  6. Step 6: Final answer
    x = 477,406.11

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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.