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Finding the Fourth Proportional to 680,216.31, 938,670.32 and 370,120.17

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Solution

The fourth proportional to 680,216.31, 938,670.32 and 370,120.17 is: 510,750.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,216.31 : 938,670.32 = 370,120.17 : x
  2. Step 2: Convert to fraction form
    680,216.31/938,670.32 = 370,120.17/x
  3. Step 3: Cross multiply
    680,216.31x = 938,670.32 × 370,120.17
  4. Step 4: Simplify right side
    680,216.31x = 347,420,818,205.47
  5. Step 5: Solve for x
    x = 347,420,818,205.47/680,216.31
  6. Step 6: Final answer
    x = 510,750.50

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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.