Home / 521,384,415.90-780,061,084.65-339,985,887.90

Finding the Fourth Proportional to 521,384,415.90, 780,061,084.65 and 339,985,887.90

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Solution

The fourth proportional to 521,384,415.90, 780,061,084.65 and 339,985,887.90 is: 508,664,533.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,384,415.90 : 780,061,084.65 = 339,985,887.90 : x
  2. Step 2: Convert to fraction form
    521,384,415.90/780,061,084.65 = 339,985,887.90/x
  3. Step 3: Cross multiply
    521,384,415.90x = 780,061,084.65 × 339,985,887.90
  4. Step 4: Simplify right side
    521,384,415.90x = 265,209,760,480,967,296
  5. Step 5: Solve for x
    x = 265,209,760,480,967,296/521,384,415.90
  6. Step 6: Final answer
    x = 508,664,533.10

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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.