Home / 639,108.10-881,968.50-352,628.16

Finding the Fourth Proportional to 639,108.10, 881,968.50 and 352,628.16

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Solution

The fourth proportional to 639,108.10, 881,968.50 and 352,628.16 is: 486,626.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,108.10 : 881,968.50 = 352,628.16 : x
  2. Step 2: Convert to fraction form
    639,108.10/881,968.50 = 352,628.16/x
  3. Step 3: Cross multiply
    639,108.10x = 881,968.50 × 352,628.16
  4. Step 4: Simplify right side
    639,108.10x = 311,006,929,332.96
  5. Step 5: Solve for x
    x = 311,006,929,332.96/639,108.10
  6. Step 6: Final answer
    x = 486,626.49

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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.