Home / 717,930,185.31-990,743,657.64-387,905,324.31

Finding the Fourth Proportional to 717,930,185.31, 990,743,657.64 and 387,905,324.31

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Solution

The fourth proportional to 717,930,185.31, 990,743,657.64 and 387,905,324.31 is: 535,309,348.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,930,185.31 : 990,743,657.64 = 387,905,324.31 : x
  2. Step 2: Convert to fraction form
    717,930,185.31/990,743,657.64 = 387,905,324.31/x
  3. Step 3: Cross multiply
    717,930,185.31x = 990,743,657.64 × 387,905,324.31
  4. Step 4: Simplify right side
    717,930,185.31x = 384,314,739,822,980,288
  5. Step 5: Solve for x
    x = 384,314,739,822,980,288/717,930,185.31
  6. Step 6: Final answer
    x = 535,309,348.58

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1.5x scale

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.