Home / 718,890,638,342.95-992,100,265,871.15-398,106,473,450.92

Finding the Fourth Proportional to 718,890,638,342.95, 992,100,265,871.15 and 398,106,473,450.92

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Solution

The fourth proportional to 718,890,638,342.95, 992,100,265,871.15 and 398,106,473,450.92 is: 549,404,202,934.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,890,638,342.95 : 992,100,265,871.15 = 398,106,473,450.92 : x
  2. Step 2: Convert to fraction form
    718,890,638,342.95/992,100,265,871.15 = 398,106,473,450.92/x
  3. Step 3: Cross multiply
    718,890,638,342.95x = 992,100,265,871.15 × 398,106,473,450.92
  4. Step 4: Simplify right side
    718,890,638,342.95x = 394,961,538,155,683,675,897,856
  5. Step 5: Solve for x
    x = 394,961,538,155,683,675,897,856/718,890,638,342.95
  6. Step 6: Final answer
    x = 549,404,202,934.22

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Double scale
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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.