Home / 645,142,352.99-967,719,129.89-208,443,083.78

Finding the Fourth Proportional to 645,142,352.99, 967,719,129.89 and 208,443,083.78

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Solution

The fourth proportional to 645,142,352.99, 967,719,129.89 and 208,443,083.78 is: 312,666,435.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,142,352.99 : 967,719,129.89 = 208,443,083.78 : x
  2. Step 2: Convert to fraction form
    645,142,352.99/967,719,129.89 = 208,443,083.78/x
  3. Step 3: Cross multiply
    645,142,352.99x = 967,719,129.89 × 208,443,083.78
  4. Step 4: Simplify right side
    645,142,352.99x = 201,714,359,661,289,152
  5. Step 5: Solve for x
    x = 201,714,359,661,289,152/645,142,352.99
  6. Step 6: Final answer
    x = 312,666,435.13

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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.