Home / 709,850,530.78-979,575,685.48-396,587,097.42

Finding the Fourth Proportional to 709,850,530.78, 979,575,685.48 and 396,587,097.42

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Solution

The fourth proportional to 709,850,530.78, 979,575,685.48 and 396,587,097.42 is: 547,280,111.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,850,530.78 : 979,575,685.48 = 396,587,097.42 : x
  2. Step 2: Convert to fraction form
    709,850,530.78/979,575,685.48 = 396,587,097.42/x
  3. Step 3: Cross multiply
    709,850,530.78x = 979,575,685.48 × 396,587,097.42
  4. Step 4: Simplify right side
    709,850,530.78x = 388,487,077,807,720,064
  5. Step 5: Solve for x
    x = 388,487,077,807,720,064/709,850,530.78
  6. Step 6: Final answer
    x = 547,280,111.75

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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.