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Finding the Fourth Proportional to 661,613.65, 991,091.42 and 559,975.56

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Solution

The fourth proportional to 661,613.65, 991,091.42 and 559,975.56 is: 838,838.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,613.65 : 991,091.42 = 559,975.56 : x
  2. Step 2: Convert to fraction form
    661,613.65/991,091.42 = 559,975.56/x
  3. Step 3: Cross multiply
    661,613.65x = 991,091.42 × 559,975.56
  4. Step 4: Simplify right side
    661,613.65x = 554,986,975,658.95
  5. Step 5: Solve for x
    x = 554,986,975,658.95/661,613.65
  6. Step 6: Final answer
    x = 838,838.46

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1.5x scale

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.