Home / 638,127.77-880,622.25-351,658.13

Finding the Fourth Proportional to 638,127.77, 880,622.25 and 351,658.13

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Solution

The fourth proportional to 638,127.77, 880,622.25 and 351,658.13 is: 485,291.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,127.77 : 880,622.25 = 351,658.13 : x
  2. Step 2: Convert to fraction form
    638,127.77/880,622.25 = 351,658.13/x
  3. Step 3: Cross multiply
    638,127.77x = 880,622.25 × 351,658.13
  4. Step 4: Simplify right side
    638,127.77x = 309,677,973,671.39
  5. Step 5: Solve for x
    x = 309,677,973,671.39/638,127.77
  6. Step 6: Final answer
    x = 485,291.49

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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.