Home / 1,211,326,148.88-1,672,188,095.88-709,465,286.16

Finding the Fourth Proportional to 1,211,326,148.88, 1,672,188,095.88 and 709,465,286.16

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Solution

The fourth proportional to 1,211,326,148.88, 1,672,188,095.88 and 709,465,286.16 is: 979,388,917.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,326,148.88 : 1,672,188,095.88 = 709,465,286.16 : x
  2. Step 2: Convert to fraction form
    1,211,326,148.88/1,672,188,095.88 = 709,465,286.16/x
  3. Step 3: Cross multiply
    1,211,326,148.88x = 1,672,188,095.88 × 709,465,286.16
  4. Step 4: Simplify right side
    1,211,326,148.88x = 1,186,359,405,956,849,664
  5. Step 5: Solve for x
    x = 1,186,359,405,956,849,664/1,211,326,148.88
  6. Step 6: Final answer
    x = 979,388,917.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.