Home / 776,685.39-1,165,307.54-271,320.72

Finding the Fourth Proportional to 776,685.39, 1,165,307.54 and 271,320.72

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Solution

The fourth proportional to 776,685.39, 1,165,307.54 and 271,320.72 is: 407,078.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    776,685.39 : 1,165,307.54 = 271,320.72 : x
  2. Step 2: Convert to fraction form
    776,685.39/1,165,307.54 = 271,320.72/x
  3. Step 3: Cross multiply
    776,685.39x = 1,165,307.54 × 271,320.72
  4. Step 4: Simplify right side
    776,685.39x = 316,172,079,417.63
  5. Step 5: Solve for x
    x = 316,172,079,417.63/776,685.39
  6. Step 6: Final answer
    x = 407,078.70

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1.5x scale

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.