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Finding the Fourth Proportional to 641,594.22, 885,386.80 and 355,097.22

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Solution

The fourth proportional to 641,594.22, 885,386.80 and 355,097.22 is: 490,026.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,594.22 : 885,386.80 = 355,097.22 : x
  2. Step 2: Convert to fraction form
    641,594.22/885,386.80 = 355,097.22/x
  3. Step 3: Cross multiply
    641,594.22x = 885,386.80 × 355,097.22
  4. Step 4: Simplify right side
    641,594.22x = 314,398,391,304.70
  5. Step 5: Solve for x
    x = 314,398,391,304.70/641,594.22
  6. Step 6: Final answer
    x = 490,026.84

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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.