Home / 857,258.59-1,284,987.67-288,442.21

Finding the Fourth Proportional to 857,258.59, 1,284,987.67 and 288,442.21

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Solution

The fourth proportional to 857,258.59, 1,284,987.67 and 288,442.21 is: 432,360.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,258.59 : 1,284,987.67 = 288,442.21 : x
  2. Step 2: Convert to fraction form
    857,258.59/1,284,987.67 = 288,442.21/x
  3. Step 3: Cross multiply
    857,258.59x = 1,284,987.67 × 288,442.21
  4. Step 4: Simplify right side
    857,258.59x = 370,644,683,357.55
  5. Step 5: Solve for x
    x = 370,644,683,357.55/857,258.59
  6. Step 6: Final answer
    x = 432,360.42

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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.