Home / 643,566,523.60-965,349,785.40-212,745,019.60

Finding the Fourth Proportional to 643,566,523.60, 965,349,785.40 and 212,745,019.60

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Solution

The fourth proportional to 643,566,523.60, 965,349,785.40 and 212,745,019.60 is: 319,117,529.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,566,523.60 : 965,349,785.40 = 212,745,019.60 : x
  2. Step 2: Convert to fraction form
    643,566,523.60/965,349,785.40 = 212,745,019.60/x
  3. Step 3: Cross multiply
    643,566,523.60x = 965,349,785.40 × 212,745,019.60
  4. Step 4: Simplify right side
    643,566,523.60x = 205,373,359,015,778,784
  5. Step 5: Solve for x
    x = 205,373,359,015,778,784/643,566,523.60
  6. Step 6: Final answer
    x = 319,117,529.40

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Similar ratio
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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.