Home / 790,573,982.78-1,090,992,197.85-438,172,724.36

Finding the Fourth Proportional to 790,573,982.78, 1,090,992,197.85 and 438,172,724.36

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Solution

The fourth proportional to 790,573,982.78, 1,090,992,197.85 and 438,172,724.36 is: 604,678,415.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,573,982.78 : 1,090,992,197.85 = 438,172,724.36 : x
  2. Step 2: Convert to fraction form
    790,573,982.78/1,090,992,197.85 = 438,172,724.36/x
  3. Step 3: Cross multiply
    790,573,982.78x = 1,090,992,197.85 × 438,172,724.36
  4. Step 4: Simplify right side
    790,573,982.78x = 478,043,023,586,094,208
  5. Step 5: Solve for x
    x = 478,043,023,586,094,208/790,573,982.78
  6. Step 6: Final answer
    x = 604,678,415.94

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1.5x scale

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.