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Finding the Fourth Proportional to 630,334.67, 869,902.94 and 358,427.86

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Solution

The fourth proportional to 630,334.67, 869,902.94 and 358,427.86 is: 494,653.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,334.67 : 869,902.94 = 358,427.86 : x
  2. Step 2: Convert to fraction form
    630,334.67/869,902.94 = 358,427.86/x
  3. Step 3: Cross multiply
    630,334.67x = 869,902.94 × 358,427.86
  4. Step 4: Simplify right side
    630,334.67x = 311,797,447,913.22
  5. Step 5: Solve for x
    x = 311,797,447,913.22/630,334.67
  6. Step 6: Final answer
    x = 494,653.82

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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.