Home / 819,865.22-1,131,415.54-457,312.55

Finding the Fourth Proportional to 819,865.22, 1,131,415.54 and 457,312.55

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Solution

The fourth proportional to 819,865.22, 1,131,415.54 and 457,312.55 is: 631,092.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,865.22 : 1,131,415.54 = 457,312.55 : x
  2. Step 2: Convert to fraction form
    819,865.22/1,131,415.54 = 457,312.55/x
  3. Step 3: Cross multiply
    819,865.22x = 1,131,415.54 × 457,312.55
  4. Step 4: Simplify right side
    819,865.22x = 517,410,518,906.67
  5. Step 5: Solve for x
    x = 517,410,518,906.67/819,865.22
  6. Step 6: Final answer
    x = 631,092.17

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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.