Home / 811,455,419.52-1,217,764,277.76-345,443,569.28

Finding the Fourth Proportional to 811,455,419.52, 1,217,764,277.76 and 345,443,569.28

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Solution

The fourth proportional to 811,455,419.52, 1,217,764,277.76 and 345,443,569.28 is: 518,412,753.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,455,419.52 : 1,217,764,277.76 = 345,443,569.28 : x
  2. Step 2: Convert to fraction form
    811,455,419.52/1,217,764,277.76 = 345,443,569.28/x
  3. Step 3: Cross multiply
    811,455,419.52x = 1,217,764,277.76 × 345,443,569.28
  4. Step 4: Simplify right side
    811,455,419.52x = 420,668,838,651,095,680
  5. Step 5: Solve for x
    x = 420,668,838,651,095,680/811,455,419.52
  6. Step 6: Final answer
    x = 518,412,753.84

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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.