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Finding the Fourth Proportional to 630,209.32, 869,688.33 and 343,728.52

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Solution

The fourth proportional to 630,209.32, 869,688.33 and 343,728.52 is: 474,345.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,209.32 : 869,688.33 = 343,728.52 : x
  2. Step 2: Convert to fraction form
    630,209.32/869,688.33 = 343,728.52/x
  3. Step 3: Cross multiply
    630,209.32x = 869,688.33 × 343,728.52
  4. Step 4: Simplify right side
    630,209.32x = 298,936,682,532.17
  5. Step 5: Solve for x
    x = 298,936,682,532.17/630,209.32
  6. Step 6: Final answer
    x = 474,345.07

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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.