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Finding the Fourth Proportional to 621,673.04, 857,873.73 and 349,752.40

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Solution

The fourth proportional to 621,673.04, 857,873.73 and 349,752.40 is: 482,638.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,673.04 : 857,873.73 = 349,752.40 : x
  2. Step 2: Convert to fraction form
    621,673.04/857,873.73 = 349,752.40/x
  3. Step 3: Cross multiply
    621,673.04x = 857,873.73 × 349,752.40
  4. Step 4: Simplify right side
    621,673.04x = 300,043,395,131.34
  5. Step 5: Solve for x
    x = 300,043,395,131.34/621,673.04
  6. Step 6: Final answer
    x = 482,638.58

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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.