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Finding the Fourth Proportional to 621,505.53, 857,703.24 and 349,586.10

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Solution

The fourth proportional to 621,505.53, 857,703.24 and 349,586.10 is: 482,443.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,505.53 : 857,703.24 = 349,586.10 : x
  2. Step 2: Convert to fraction form
    621,505.53/857,703.24 = 349,586.10/x
  3. Step 3: Cross multiply
    621,505.53x = 857,703.24 × 349,586.10
  4. Step 4: Simplify right side
    621,505.53x = 299,841,130,628.96
  5. Step 5: Solve for x
    x = 299,841,130,628.96/621,505.53
  6. Step 6: Final answer
    x = 482,443.22

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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.