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Finding the Fourth Proportional to 630,374.15, 869,912.29 and 358,442.11

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Solution

The fourth proportional to 630,374.15, 869,912.29 and 358,442.11 is: 494,647.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,374.15 : 869,912.29 = 358,442.11 : x
  2. Step 2: Convert to fraction form
    630,374.15/869,912.29 = 358,442.11/x
  3. Step 3: Cross multiply
    630,374.15x = 869,912.29 × 358,442.11
  4. Step 4: Simplify right side
    630,374.15x = 311,813,194,950.32
  5. Step 5: Solve for x
    x = 311,813,194,950.32/630,374.15
  6. Step 6: Final answer
    x = 494,647.81

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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.