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Finding the Fourth Proportional to 487,999.72, 672,526.78 and 351,801.56

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Solution

The fourth proportional to 487,999.72, 672,526.78 and 351,801.56 is: 484,828.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,999.72 : 672,526.78 = 351,801.56 : x
  2. Step 2: Convert to fraction form
    487,999.72/672,526.78 = 351,801.56/x
  3. Step 3: Cross multiply
    487,999.72x = 672,526.78 × 351,801.56
  4. Step 4: Simplify right side
    487,999.72x = 236,595,969,343.51
  5. Step 5: Solve for x
    x = 236,595,969,343.51/487,999.72
  6. Step 6: Final answer
    x = 484,828.09

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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.