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Finding the Fourth Proportional to 691,461, 954,216.18 and 373,509

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Solution

The fourth proportional to 691,461, 954,216.18 and 373,509 is: 515,442.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,461 : 954,216.18 = 373,509 : x
  2. Step 2: Convert to fraction form
    691,461/954,216.18 = 373,509/x
  3. Step 3: Cross multiply
    691,461x = 954,216.18 × 373,509
  4. Step 4: Simplify right side
    691,461x = 356,408,331,175.62
  5. Step 5: Solve for x
    x = 356,408,331,175.62/691,461
  6. Step 6: Final answer
    x = 515,442.42

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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.