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Finding the Fourth Proportional to 620,376.66, 856,080.36 and 348,437.52

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Solution

The fourth proportional to 620,376.66, 856,080.36 and 348,437.52 is: 480,821.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,376.66 : 856,080.36 = 348,437.52 : x
  2. Step 2: Convert to fraction form
    620,376.66/856,080.36 = 348,437.52/x
  3. Step 3: Cross multiply
    620,376.66x = 856,080.36 × 348,437.52
  4. Step 4: Simplify right side
    620,376.66x = 298,290,517,559.11
  5. Step 5: Solve for x
    x = 298,290,517,559.11/620,376.66
  6. Step 6: Final answer
    x = 480,821.63

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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.