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Finding the Fourth Proportional to 808,254.68, 1,115,369.82 and 445,672.40

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Solution

The fourth proportional to 808,254.68, 1,115,369.82 and 445,672.40 is: 615,015.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,254.68 : 1,115,369.82 = 445,672.40 : x
  2. Step 2: Convert to fraction form
    808,254.68/1,115,369.82 = 445,672.40/x
  3. Step 3: Cross multiply
    808,254.68x = 1,115,369.82 × 445,672.40
  4. Step 4: Simplify right side
    808,254.68x = 497,089,544,566.97
  5. Step 5: Solve for x
    x = 497,089,544,566.97/808,254.68
  6. Step 6: Final answer
    x = 615,015.98

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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.