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Finding the Fourth Proportional to 630,133.54, 869,434.82 and 358,180.03

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Solution

The fourth proportional to 630,133.54, 869,434.82 and 358,180.03 is: 494,203.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,133.54 : 869,434.82 = 358,180.03 : x
  2. Step 2: Convert to fraction form
    630,133.54/869,434.82 = 358,180.03/x
  3. Step 3: Cross multiply
    630,133.54x = 869,434.82 × 358,180.03
  4. Step 4: Simplify right side
    630,133.54x = 311,414,189,910.65
  5. Step 5: Solve for x
    x = 311,414,189,910.65/630,133.54
  6. Step 6: Final answer
    x = 494,203.48

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1.5x scale

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.