Home / 513,829,481.12-709,085,347.92-278,880,114.88

Finding the Fourth Proportional to 513,829,481.12, 709,085,347.92 and 278,880,114.88

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Solution

The fourth proportional to 513,829,481.12, 709,085,347.92 and 278,880,114.88 is: 384,854,918.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,829,481.12 : 709,085,347.92 = 278,880,114.88 : x
  2. Step 2: Convert to fraction form
    513,829,481.12/709,085,347.92 = 278,880,114.88/x
  3. Step 3: Cross multiply
    513,829,481.12x = 709,085,347.92 × 278,880,114.88
  4. Step 4: Simplify right side
    513,829,481.12x = 197,749,803,287,654,368
  5. Step 5: Solve for x
    x = 197,749,803,287,654,368/513,829,481.12
  6. Step 6: Final answer
    x = 384,854,918.91

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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.