Home / 1,432,258.32-1,976,476.88-787,678.40

Finding the Fourth Proportional to 1,432,258.32, 1,976,476.88 and 787,678.40

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Solution

The fourth proportional to 1,432,258.32, 1,976,476.88 and 787,678.40 is: 1,086,974.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432,258.32 : 1,976,476.88 = 787,678.40 : x
  2. Step 2: Convert to fraction form
    1,432,258.32/1,976,476.88 = 787,678.40/x
  3. Step 3: Cross multiply
    1,432,258.32x = 1,976,476.88 × 787,678.40
  4. Step 4: Simplify right side
    1,432,258.32x = 1,556,828,146,475.39
  5. Step 5: Solve for x
    x = 1,556,828,146,475.39/1,432,258.32
  6. Step 6: Final answer
    x = 1,086,974.41

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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.