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Finding the Fourth Proportional to 615,999.69, 850,070.48 and 344,071.55

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Solution

The fourth proportional to 615,999.69, 850,070.48 and 344,071.55 is: 474,813.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,999.69 : 850,070.48 = 344,071.55 : x
  2. Step 2: Convert to fraction form
    615,999.69/850,070.48 = 344,071.55/x
  3. Step 3: Cross multiply
    615,999.69x = 850,070.48 × 344,071.55
  4. Step 4: Simplify right side
    615,999.69x = 292,485,061,692.13
  5. Step 5: Solve for x
    x = 292,485,061,692.13/615,999.69
  6. Step 6: Final answer
    x = 474,813.65

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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.