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Finding the Fourth Proportional to 621,482.49, 857,637.34 and 349,550.26

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Solution

The fourth proportional to 621,482.49, 857,637.34 and 349,550.26 is: 482,374.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,482.49 : 857,637.34 = 349,550.26 : x
  2. Step 2: Convert to fraction form
    621,482.49/857,637.34 = 349,550.26/x
  3. Step 3: Cross multiply
    621,482.49x = 857,637.34 × 349,550.26
  4. Step 4: Simplify right side
    621,482.49x = 299,787,352,164.74
  5. Step 5: Solve for x
    x = 299,787,352,164.74/621,482.49
  6. Step 6: Final answer
    x = 482,374.58

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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.