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Finding the Fourth Proportional to 708,449.54, 976,973.54 and 449,870.40

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Solution

The fourth proportional to 708,449.54, 976,973.54 and 449,870.40 is: 620,385.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,449.54 : 976,973.54 = 449,870.40 : x
  2. Step 2: Convert to fraction form
    708,449.54/976,973.54 = 449,870.40/x
  3. Step 3: Cross multiply
    708,449.54x = 976,973.54 × 449,870.40
  4. Step 4: Simplify right side
    708,449.54x = 439,511,474,979.86
  5. Step 5: Solve for x
    x = 439,511,474,979.86/708,449.54
  6. Step 6: Final answer
    x = 620,385.01

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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.