Home / 728,475,931.72-1,005,625,086.75-464,512,729.96

Finding the Fourth Proportional to 728,475,931.72, 1,005,625,086.75 and 464,512,729.96

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Solution

The fourth proportional to 728,475,931.72, 1,005,625,086.75 and 464,512,729.96 is: 641,236,908.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,475,931.72 : 1,005,625,086.75 = 464,512,729.96 : x
  2. Step 2: Convert to fraction form
    728,475,931.72/1,005,625,086.75 = 464,512,729.96/x
  3. Step 3: Cross multiply
    728,475,931.72x = 1,005,625,086.75 × 464,512,729.96
  4. Step 4: Simplify right side
    728,475,931.72x = 467,125,654,355,153,600
  5. Step 5: Solve for x
    x = 467,125,654,355,153,600/728,475,931.72
  6. Step 6: Final answer
    x = 641,236,908.48

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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.