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Finding the Fourth Proportional to 612,147,648.80, 918,221,473.20 and 336,648,634.40

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Solution

The fourth proportional to 612,147,648.80, 918,221,473.20 and 336,648,634.40 is: 504,972,951.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,147,648.80 : 918,221,473.20 = 336,648,634.40 : x
  2. Step 2: Convert to fraction form
    612,147,648.80/918,221,473.20 = 336,648,634.40/x
  3. Step 3: Cross multiply
    612,147,648.80x = 918,221,473.20 × 336,648,634.40
  4. Step 4: Simplify right side
    612,147,648.80x = 309,118,005,029,536,192
  5. Step 5: Solve for x
    x = 309,118,005,029,536,192/612,147,648.80
  6. Step 6: Final answer
    x = 504,972,951.60

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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.