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Finding the Fourth Proportional to 938,718, 1,408,426.56 and 433,520.64

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Solution

The fourth proportional to 938,718, 1,408,426.56 and 433,520.64 is: 650,442.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    938,718 : 1,408,426.56 = 433,520.64 : x
  2. Step 2: Convert to fraction form
    938,718/1,408,426.56 = 433,520.64/x
  3. Step 3: Cross multiply
    938,718x = 1,408,426.56 × 433,520.64
  4. Step 4: Simplify right side
    938,718x = 610,581,983,684.20
  5. Step 5: Solve for x
    x = 610,581,983,684.20/938,718
  6. Step 6: Final answer
    x = 650,442.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.