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Finding the Fourth Proportional to 641,950.98, 885,881.49 and 355,464.90

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Solution

The fourth proportional to 641,950.98, 885,881.49 and 355,464.90 is: 490,535.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,950.98 : 885,881.49 = 355,464.90 : x
  2. Step 2: Convert to fraction form
    641,950.98/885,881.49 = 355,464.90/x
  3. Step 3: Cross multiply
    641,950.98x = 885,881.49 × 355,464.90
  4. Step 4: Simplify right side
    641,950.98x = 314,899,775,254.70
  5. Step 5: Solve for x
    x = 314,899,775,254.70/641,950.98
  6. Step 6: Final answer
    x = 490,535.55

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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.