Home / 718,890,638,346.18-992,100,265,875.64-398,106,473,454.18

Finding the Fourth Proportional to 718,890,638,346.18, 992,100,265,875.64 and 398,106,473,454.18

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Solution

The fourth proportional to 718,890,638,346.18, 992,100,265,875.64 and 398,106,473,454.18 is: 549,404,202,938.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,890,638,346.18 : 992,100,265,875.64 = 398,106,473,454.18 : x
  2. Step 2: Convert to fraction form
    718,890,638,346.18/992,100,265,875.64 = 398,106,473,454.18/x
  3. Step 3: Cross multiply
    718,890,638,346.18x = 992,100,265,875.64 × 398,106,473,454.18
  4. Step 4: Simplify right side
    718,890,638,346.18x = 394,961,538,160,705,365,082,112
  5. Step 5: Solve for x
    x = 394,961,538,160,705,365,082,112/718,890,638,346.18
  6. Step 6: Final answer
    x = 549,404,202,938.74

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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.