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Finding the Fourth Proportional to 641,762.35, 885,596.92 and 351,317.74

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Solution

The fourth proportional to 641,762.35, 885,596.92 and 351,317.74 is: 484,799.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,762.35 : 885,596.92 = 351,317.74 : x
  2. Step 2: Convert to fraction form
    641,762.35/885,596.92 = 351,317.74/x
  3. Step 3: Cross multiply
    641,762.35x = 885,596.92 × 351,317.74
  4. Step 4: Simplify right side
    641,762.35x = 311,125,908,485.36
  5. Step 5: Solve for x
    x = 311,125,908,485.36/641,762.35
  6. Step 6: Final answer
    x = 484,799.25

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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.