Home / 718,890,638,345.70-992,100,265,874.95-398,106,473,453.67

Finding the Fourth Proportional to 718,890,638,345.70, 992,100,265,874.95 and 398,106,473,453.67

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Solution

The fourth proportional to 718,890,638,345.70, 992,100,265,874.95 and 398,106,473,453.67 is: 549,404,202,938.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,890,638,345.70 : 992,100,265,874.95 = 398,106,473,453.67 : x
  2. Step 2: Convert to fraction form
    718,890,638,345.70/992,100,265,874.95 = 398,106,473,453.67/x
  3. Step 3: Cross multiply
    718,890,638,345.70x = 992,100,265,874.95 × 398,106,473,453.67
  4. Step 4: Simplify right side
    718,890,638,345.70x = 394,961,538,159,924,687,667,200
  5. Step 5: Solve for x
    x = 394,961,538,159,924,687,667,200/718,890,638,345.70
  6. Step 6: Final answer
    x = 549,404,202,938.02

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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.