Home / 639,206.08-881,836.14-448,344.16

Finding the Fourth Proportional to 639,206.08, 881,836.14 and 448,344.16

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Solution

The fourth proportional to 639,206.08, 881,836.14 and 448,344.16 is: 618,526.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,206.08 : 881,836.14 = 448,344.16 : x
  2. Step 2: Convert to fraction form
    639,206.08/881,836.14 = 448,344.16/x
  3. Step 3: Cross multiply
    639,206.08x = 881,836.14 × 448,344.16
  4. Step 4: Simplify right side
    639,206.08x = 395,366,083,445.94
  5. Step 5: Solve for x
    x = 395,366,083,445.94/639,206.08
  6. Step 6: Final answer
    x = 618,526.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.