Home / 1,186,390,443.21-1,778,339,934.96-399,170,794.31

Finding the Fourth Proportional to 1,186,390,443.21, 1,778,339,934.96 and 399,170,794.31

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Solution

The fourth proportional to 1,186,390,443.21, 1,778,339,934.96 and 399,170,794.31 is: 598,337,055.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,390,443.21 : 1,778,339,934.96 = 399,170,794.31 : x
  2. Step 2: Convert to fraction form
    1,186,390,443.21/1,778,339,934.96 = 399,170,794.31/x
  3. Step 3: Cross multiply
    1,186,390,443.21x = 1,778,339,934.96 × 399,170,794.31
  4. Step 4: Simplify right side
    1,186,390,443.21x = 709,861,364,391,176,960
  5. Step 5: Solve for x
    x = 709,861,364,391,176,960/1,186,390,443.21
  6. Step 6: Final answer
    x = 598,337,055.44

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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.