Home / 639,113.10-881,975.40-352,633.14

Finding the Fourth Proportional to 639,113.10, 881,975.40 and 352,633.14

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Solution

The fourth proportional to 639,113.10, 881,975.40 and 352,633.14 is: 486,633.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,113.10 : 881,975.40 = 352,633.14 : x
  2. Step 2: Convert to fraction form
    639,113.10/881,975.40 = 352,633.14/x
  3. Step 3: Cross multiply
    639,113.10x = 881,975.40 × 352,633.14
  4. Step 4: Simplify right side
    639,113.10x = 311,013,754,704.76
  5. Step 5: Solve for x
    x = 311,013,754,704.76/639,113.10
  6. Step 6: Final answer
    x = 486,633.36

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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.