Home / 639,111.76-881,974.08-352,632.40

Finding the Fourth Proportional to 639,111.76, 881,974.08 and 352,632.40

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Solution

The fourth proportional to 639,111.76, 881,974.08 and 352,632.40 is: 486,632.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,111.76 : 881,974.08 = 352,632.40 : x
  2. Step 2: Convert to fraction form
    639,111.76/881,974.08 = 352,632.40/x
  3. Step 3: Cross multiply
    639,111.76x = 881,974.08 × 352,632.40
  4. Step 4: Simplify right side
    639,111.76x = 311,012,636,568.19
  5. Step 5: Solve for x
    x = 311,012,636,568.19/639,111.76
  6. Step 6: Final answer
    x = 486,632.63

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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.