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Finding the Fourth Proportional to 777,845, 1,073,426.10 and 438,325.40

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Solution

The fourth proportional to 777,845, 1,073,426.10 and 438,325.40 is: 604,889.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,845 : 1,073,426.10 = 438,325.40 : x
  2. Step 2: Convert to fraction form
    777,845/1,073,426.10 = 438,325.40/x
  3. Step 3: Cross multiply
    777,845x = 1,073,426.10 × 438,325.40
  4. Step 4: Simplify right side
    777,845x = 470,509,924,652.94
  5. Step 5: Solve for x
    x = 470,509,924,652.94/777,845
  6. Step 6: Final answer
    x = 604,889.05

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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.