Home / 718,890,638,257.80-992,100,265,753.65-398,106,473,365.66

Finding the Fourth Proportional to 718,890,638,257.80, 992,100,265,753.65 and 398,106,473,365.66

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Solution

The fourth proportional to 718,890,638,257.80, 992,100,265,753.65 and 398,106,473,365.66 is: 549,404,202,816.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,890,638,257.80 : 992,100,265,753.65 = 398,106,473,365.66 : x
  2. Step 2: Convert to fraction form
    718,890,638,257.80/992,100,265,753.65 = 398,106,473,365.66/x
  3. Step 3: Cross multiply
    718,890,638,257.80x = 992,100,265,753.65 × 398,106,473,365.66
  4. Step 4: Simplify right side
    718,890,638,257.80x = 394,961,538,024,319,685,230,592
  5. Step 5: Solve for x
    x = 394,961,538,024,319,685,230,592/718,890,638,257.80
  6. Step 6: Final answer
    x = 549,404,202,816.57

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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.