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Finding the Fourth Proportional to 621,590.10, 857,870.22 and 349,669.46

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Solution

The fourth proportional to 621,590.10, 857,870.22 and 349,669.46 is: 482,586.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,590.10 : 857,870.22 = 349,669.46 : x
  2. Step 2: Convert to fraction form
    621,590.10/857,870.22 = 349,669.46/x
  3. Step 3: Cross multiply
    621,590.10x = 857,870.22 × 349,669.46
  4. Step 4: Simplify right side
    621,590.10x = 299,971,016,577.48
  5. Step 5: Solve for x
    x = 299,971,016,577.48/621,590.10
  6. Step 6: Final answer
    x = 482,586.54

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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.