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Finding the Fourth Proportional to 438,833.40, 615,196.20 and 438,833.40

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Solution

The fourth proportional to 438,833.40, 615,196.20 and 438,833.40 is: 615,196.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,833.40 : 615,196.20 = 438,833.40 : x
  2. Step 2: Convert to fraction form
    438,833.40/615,196.20 = 438,833.40/x
  3. Step 3: Cross multiply
    438,833.40x = 615,196.20 × 438,833.40
  4. Step 4: Simplify right side
    438,833.40x = 269,968,640,113.08
  5. Step 5: Solve for x
    x = 269,968,640,113.08/438,833.40
  6. Step 6: Final answer
    x = 615,196.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.