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Finding the Fourth Proportional to 630,357.66, 869,892.36 and 343,877.70

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Solution

The fourth proportional to 630,357.66, 869,892.36 and 343,877.70 is: 474,550.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,357.66 : 869,892.36 = 343,877.70 : x
  2. Step 2: Convert to fraction form
    630,357.66/869,892.36 = 343,877.70/x
  3. Step 3: Cross multiply
    630,357.66x = 869,892.36 × 343,877.70
  4. Step 4: Simplify right side
    630,357.66x = 299,136,584,004.37
  5. Step 5: Solve for x
    x = 299,136,584,004.37/630,357.66
  6. Step 6: Final answer
    x = 474,550.57

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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.