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Finding the Fourth Proportional to 615,512.93, 849,791.86 and 397,835.55

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Solution

The fourth proportional to 615,512.93, 849,791.86 and 397,835.55 is: 549,261.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,512.93 : 849,791.86 = 397,835.55 : x
  2. Step 2: Convert to fraction form
    615,512.93/849,791.86 = 397,835.55/x
  3. Step 3: Cross multiply
    615,512.93x = 849,791.86 × 397,835.55
  4. Step 4: Simplify right side
    615,512.93x = 338,077,411,014.03
  5. Step 5: Solve for x
    x = 338,077,411,014.03/615,512.93
  6. Step 6: Final answer
    x = 549,261.27

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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.