Home / 513,743,693.38-708,966,755.13-278,794,356.10

Finding the Fourth Proportional to 513,743,693.38, 708,966,755.13 and 278,794,356.10

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Solution

The fourth proportional to 513,743,693.38, 708,966,755.13 and 278,794,356.10 is: 384,736,460.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,743,693.38 : 708,966,755.13 = 278,794,356.10 : x
  2. Step 2: Convert to fraction form
    513,743,693.38/708,966,755.13 = 278,794,356.10/x
  3. Step 3: Cross multiply
    513,743,693.38x = 708,966,755.13 × 278,794,356.10
  4. Step 4: Simplify right side
    513,743,693.38x = 197,655,929,992,774,752
  5. Step 5: Solve for x
    x = 197,655,929,992,774,752/513,743,693.38
  6. Step 6: Final answer
    x = 384,736,460.11

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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.