Home / 661,505.10-992,257.65-437,556.30

Finding the Fourth Proportional to 661,505.10, 992,257.65 and 437,556.30

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Solution

The fourth proportional to 661,505.10, 992,257.65 and 437,556.30 is: 656,334.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,505.10 : 992,257.65 = 437,556.30 : x
  2. Step 2: Convert to fraction form
    661,505.10/992,257.65 = 437,556.30/x
  3. Step 3: Cross multiply
    661,505.10x = 992,257.65 × 437,556.30
  4. Step 4: Simplify right side
    661,505.10x = 434,168,585,980.70
  5. Step 5: Solve for x
    x = 434,168,585,980.70/661,505.10
  6. Step 6: Final answer
    x = 656,334.45

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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.