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Finding the Fourth Proportional to 667,127.44, 920,618.04 and 380,642.32

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Solution

The fourth proportional to 667,127.44, 920,618.04 and 380,642.32 is: 525,276.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,127.44 : 920,618.04 = 380,642.32 : x
  2. Step 2: Convert to fraction form
    667,127.44/920,618.04 = 380,642.32/x
  3. Step 3: Cross multiply
    667,127.44x = 920,618.04 × 380,642.32
  4. Step 4: Simplify right side
    667,127.44x = 350,426,186,579.45
  5. Step 5: Solve for x
    x = 350,426,186,579.45/667,127.44
  6. Step 6: Final answer
    x = 525,276.23

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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.