Home / 1,126,959,057.52-1,690,554,541-390,027,668.72

Finding the Fourth Proportional to 1,126,959,057.52, 1,690,554,541 and 390,027,668.72

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Solution

The fourth proportional to 1,126,959,057.52, 1,690,554,541 and 390,027,668.72 is: 585,081,633.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126,959,057.52 : 1,690,554,541 = 390,027,668.72 : x
  2. Step 2: Convert to fraction form
    1,126,959,057.52/1,690,554,541 = 390,027,668.72/x
  3. Step 3: Cross multiply
    1,126,959,057.52x = 1,690,554,541 × 390,027,668.72
  4. Step 4: Simplify right side
    1,126,959,057.52x = 659,363,046,470,239,744
  5. Step 5: Solve for x
    x = 659,363,046,470,239,744/1,126,959,057.52
  6. Step 6: Final answer
    x = 585,081,633.69

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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.