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Finding the Fourth Proportional to 659,300,765.79, 988,198,881.69 and 265,575,655.65

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Solution

The fourth proportional to 659,300,765.79, 988,198,881.69 and 265,575,655.65 is: 398,060,459.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,300,765.79 : 988,198,881.69 = 265,575,655.65 : x
  2. Step 2: Convert to fraction form
    659,300,765.79/988,198,881.69 = 265,575,655.65/x
  3. Step 3: Cross multiply
    659,300,765.79x = 988,198,881.69 × 265,575,655.65
  4. Step 4: Simplify right side
    659,300,765.79x = 262,441,565,917,418,560
  5. Step 5: Solve for x
    x = 262,441,565,917,418,560/659,300,765.79
  6. Step 6: Final answer
    x = 398,060,459.71

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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.