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Finding the Fourth Proportional to 623,422.32, 860,305.59 and 351,487.83

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Solution

The fourth proportional to 623,422.32, 860,305.59 and 351,487.83 is: 485,043.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,422.32 : 860,305.59 = 351,487.83 : x
  2. Step 2: Convert to fraction form
    623,422.32/860,305.59 = 351,487.83/x
  3. Step 3: Cross multiply
    623,422.32x = 860,305.59 × 351,487.83
  4. Step 4: Simplify right side
    623,422.32x = 302,386,944,965.97
  5. Step 5: Solve for x
    x = 302,386,944,965.97/623,422.32
  6. Step 6: Final answer
    x = 485,043.50

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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.