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Finding the Fourth Proportional to 544,631.40, 815,780.70 and 439,655.40

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Solution

The fourth proportional to 544,631.40, 815,780.70 and 439,655.40 is: 658,541.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    544,631.40 : 815,780.70 = 439,655.40 : x
  2. Step 2: Convert to fraction form
    544,631.40/815,780.70 = 439,655.40/x
  3. Step 3: Cross multiply
    544,631.40x = 815,780.70 × 439,655.40
  4. Step 4: Simplify right side
    544,631.40x = 358,662,389,970.78
  5. Step 5: Solve for x
    x = 358,662,389,970.78/544,631.40
  6. Step 6: Final answer
    x = 658,541.52

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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.