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Finding the Fourth Proportional to 495,853.60, 743,780.40 and 285,901.60

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Solution

The fourth proportional to 495,853.60, 743,780.40 and 285,901.60 is: 428,852.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,853.60 : 743,780.40 = 285,901.60 : x
  2. Step 2: Convert to fraction form
    495,853.60/743,780.40 = 285,901.60/x
  3. Step 3: Cross multiply
    495,853.60x = 743,780.40 × 285,901.60
  4. Step 4: Simplify right side
    495,853.60x = 212,648,006,408.64
  5. Step 5: Solve for x
    x = 212,648,006,408.64/495,853.60
  6. Step 6: Final answer
    x = 428,852.40

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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.