Home / 916,772.40-1,375,155.36-285,686.64

Finding the Fourth Proportional to 916,772.40, 1,375,155.36 and 285,686.64

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Solution

The fourth proportional to 916,772.40, 1,375,155.36 and 285,686.64 is: 428,528.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,772.40 : 1,375,155.36 = 285,686.64 : x
  2. Step 2: Convert to fraction form
    916,772.40/1,375,155.36 = 285,686.64/x
  3. Step 3: Cross multiply
    916,772.40x = 1,375,155.36 × 285,686.64
  4. Step 4: Simplify right side
    916,772.40x = 392,863,514,276.39
  5. Step 5: Solve for x
    x = 392,863,514,276.39/916,772.40
  6. Step 6: Final answer
    x = 428,528.95

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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.