Home / 908,258.81-1,361,915.16-428,357.75

Finding the Fourth Proportional to 908,258.81, 1,361,915.16 and 428,357.75

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Solution

The fourth proportional to 908,258.81, 1,361,915.16 and 428,357.75 is: 642,313.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,258.81 : 1,361,915.16 = 428,357.75 : x
  2. Step 2: Convert to fraction form
    908,258.81/1,361,915.16 = 428,357.75/x
  3. Step 3: Cross multiply
    908,258.81x = 1,361,915.16 × 428,357.75
  4. Step 4: Simplify right side
    908,258.81x = 583,386,917,033.28
  5. Step 5: Solve for x
    x = 583,386,917,033.28/908,258.81
  6. Step 6: Final answer
    x = 642,313.52

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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.