Home / 661,564,857.68-913,012,878.60-379,333,560.08

Finding the Fourth Proportional to 661,564,857.68, 913,012,878.60 and 379,333,560.08

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Solution

The fourth proportional to 661,564,857.68, 913,012,878.60 and 379,333,560.08 is: 523,510,917.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,564,857.68 : 913,012,878.60 = 379,333,560.08 : x
  2. Step 2: Convert to fraction form
    661,564,857.68/913,012,878.60 = 379,333,560.08/x
  3. Step 3: Cross multiply
    661,564,857.68x = 913,012,878.60 × 379,333,560.08
  4. Step 4: Simplify right side
    661,564,857.68x = 346,336,425,638,226,816
  5. Step 5: Solve for x
    x = 346,336,425,638,226,816/661,564,857.68
  6. Step 6: Final answer
    x = 523,510,917.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.