Home / 827,012,696.47-1,239,768,199.76-412,616,262.31

Finding the Fourth Proportional to 827,012,696.47, 1,239,768,199.76 and 412,616,262.31

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Solution

The fourth proportional to 827,012,696.47, 1,239,768,199.76 and 412,616,262.31 is: 618,549,779.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,012,696.47 : 1,239,768,199.76 = 412,616,262.31 : x
  2. Step 2: Convert to fraction form
    827,012,696.47/1,239,768,199.76 = 412,616,262.31/x
  3. Step 3: Cross multiply
    827,012,696.47x = 1,239,768,199.76 × 412,616,262.31
  4. Step 4: Simplify right side
    827,012,696.47x = 511,548,520,710,606,208
  5. Step 5: Solve for x
    x = 511,548,520,710,606,208/827,012,696.47
  6. Step 6: Final answer
    x = 618,549,779.10

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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.