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Finding the Fourth Proportional to 936,576.40, 1,400,717.40 and 787,277.20

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Solution

The fourth proportional to 936,576.40, 1,400,717.40 and 787,277.20 is: 1,177,429.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    936,576.40 : 1,400,717.40 = 787,277.20 : x
  2. Step 2: Convert to fraction form
    936,576.40/1,400,717.40 = 787,277.20/x
  3. Step 3: Cross multiply
    936,576.40x = 1,400,717.40 × 787,277.20
  4. Step 4: Simplify right side
    936,576.40x = 1,102,752,872,663.28
  5. Step 5: Solve for x
    x = 1,102,752,872,663.28/936,576.40
  6. Step 6: Final answer
    x = 1,177,429.70

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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.