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Finding the Fourth Proportional to 991,784,502.72, 1,487,891,985.66 and 301,673,819.34

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Solution

The fourth proportional to 991,784,502.72, 1,487,891,985.66 and 301,673,819.34 is: 452,576,196.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,784,502.72 : 1,487,891,985.66 = 301,673,819.34 : x
  2. Step 2: Convert to fraction form
    991,784,502.72/1,487,891,985.66 = 301,673,819.34/x
  3. Step 3: Cross multiply
    991,784,502.72x = 1,487,891,985.66 × 301,673,819.34
  4. Step 4: Simplify right side
    991,784,502.72x = 448,858,058,079,428,672
  5. Step 5: Solve for x
    x = 448,858,058,079,428,672/991,784,502.72
  6. Step 6: Final answer
    x = 452,576,196.59

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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.