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Finding the Fourth Proportional to 611,135.85, 842,858.76 and 458,512.71

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Solution

The fourth proportional to 611,135.85, 842,858.76 and 458,512.71 is: 632,365.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,135.85 : 842,858.76 = 458,512.71 : x
  2. Step 2: Convert to fraction form
    611,135.85/842,858.76 = 458,512.71/x
  3. Step 3: Cross multiply
    611,135.85x = 842,858.76 × 458,512.71
  4. Step 4: Simplify right side
    611,135.85x = 386,461,454,194.84
  5. Step 5: Solve for x
    x = 386,461,454,194.84/611,135.85
  6. Step 6: Final answer
    x = 632,365.87

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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.