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Finding the Fourth Proportional to 620,392.52, 856,141.86 and 348,460.84

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Solution

The fourth proportional to 620,392.52, 856,141.86 and 348,460.84 is: 480,876.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,392.52 : 856,141.86 = 348,460.84 : x
  2. Step 2: Convert to fraction form
    620,392.52/856,141.86 = 348,460.84/x
  3. Step 3: Cross multiply
    620,392.52x = 856,141.86 × 348,460.84
  4. Step 4: Simplify right side
    620,392.52x = 298,331,911,694.76
  5. Step 5: Solve for x
    x = 298,331,911,694.76/620,392.52
  6. Step 6: Final answer
    x = 480,876.06

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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.