Home / 718,890,638,339.95-992,100,265,867-398,106,473,447.92

Finding the Fourth Proportional to 718,890,638,339.95, 992,100,265,867 and 398,106,473,447.92

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Solution

The fourth proportional to 718,890,638,339.95, 992,100,265,867 and 398,106,473,447.92 is: 549,404,202,930.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,890,638,339.95 : 992,100,265,867 = 398,106,473,447.92 : x
  2. Step 2: Convert to fraction form
    718,890,638,339.95/992,100,265,867 = 398,106,473,447.92/x
  3. Step 3: Cross multiply
    718,890,638,339.95x = 992,100,265,867 × 398,106,473,447.92
  4. Step 4: Simplify right side
    718,890,638,339.95x = 394,961,538,151,055,177,547,776
  5. Step 5: Solve for x
    x = 394,961,538,151,055,177,547,776/718,890,638,339.95
  6. Step 6: Final answer
    x = 549,404,202,930.08

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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.