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Finding the Fourth Proportional to 547,591.20, 821,386.80 and 358,634.40

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Solution

The fourth proportional to 547,591.20, 821,386.80 and 358,634.40 is: 537,951.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,591.20 : 821,386.80 = 358,634.40 : x
  2. Step 2: Convert to fraction form
    547,591.20/821,386.80 = 358,634.40/x
  3. Step 3: Cross multiply
    547,591.20x = 821,386.80 × 358,634.40
  4. Step 4: Simplify right side
    547,591.20x = 294,577,562,185.92
  5. Step 5: Solve for x
    x = 294,577,562,185.92/547,591.20
  6. Step 6: Final answer
    x = 537,951.60

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Similar ratio
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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.