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Finding the Fourth Proportional to 708,712.64, 1,062,887.52 and 209,960

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Solution

The fourth proportional to 708,712.64, 1,062,887.52 and 209,960 is: 314,886.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,712.64 : 1,062,887.52 = 209,960 : x
  2. Step 2: Convert to fraction form
    708,712.64/1,062,887.52 = 209,960/x
  3. Step 3: Cross multiply
    708,712.64x = 1,062,887.52 × 209,960
  4. Step 4: Simplify right side
    708,712.64x = 223,163,863,699.20
  5. Step 5: Solve for x
    x = 223,163,863,699.20/708,712.64
  6. Step 6: Final answer
    x = 314,886.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.