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Finding the Fourth Proportional to 630,357.65, 869,892.38 and 343,877.72

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Solution

The fourth proportional to 630,357.65, 869,892.38 and 343,877.72 is: 474,550.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,357.65 : 869,892.38 = 343,877.72 : x
  2. Step 2: Convert to fraction form
    630,357.65/869,892.38 = 343,877.72/x
  3. Step 3: Cross multiply
    630,357.65x = 869,892.38 × 343,877.72
  4. Step 4: Simplify right side
    630,357.65x = 299,136,602,210.92
  5. Step 5: Solve for x
    x = 299,136,602,210.92/630,357.65
  6. Step 6: Final answer
    x = 474,550.61

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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.