Home / 645,518,801.53-968,274,981.87-252,085,602.48

Finding the Fourth Proportional to 645,518,801.53, 968,274,981.87 and 252,085,602.48

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Solution

The fourth proportional to 645,518,801.53, 968,274,981.87 and 252,085,602.48 is: 378,127,146.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,518,801.53 : 968,274,981.87 = 252,085,602.48 : x
  2. Step 2: Convert to fraction form
    645,518,801.53/968,274,981.87 = 252,085,602.48/x
  3. Step 3: Cross multiply
    645,518,801.53x = 968,274,981.87 × 252,085,602.48
  4. Step 4: Simplify right side
    645,518,801.53x = 244,088,182,171,726,272
  5. Step 5: Solve for x
    x = 244,088,182,171,726,272/645,518,801.53
  6. Step 6: Final answer
    x = 378,127,146.09

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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.