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Finding the Fourth Proportional to 991,784,251.64, 1,487,891,611.07 and 301,673,569.47

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Solution

The fourth proportional to 991,784,251.64, 1,487,891,611.07 and 301,673,569.47 is: 452,575,822.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,784,251.64 : 1,487,891,611.07 = 301,673,569.47 : x
  2. Step 2: Convert to fraction form
    991,784,251.64/1,487,891,611.07 = 301,673,569.47/x
  3. Step 3: Cross multiply
    991,784,251.64x = 1,487,891,611.07 × 301,673,569.47
  4. Step 4: Simplify right side
    991,784,251.64x = 448,857,573,294,447,552
  5. Step 5: Solve for x
    x = 448,857,573,294,447,552/991,784,251.64
  6. Step 6: Final answer
    x = 452,575,822.37

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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.