Home / 718,890,638,254.76-992,100,265,749.45-398,106,473,362.65

Finding the Fourth Proportional to 718,890,638,254.76, 992,100,265,749.45 and 398,106,473,362.65

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Solution

The fourth proportional to 718,890,638,254.76, 992,100,265,749.45 and 398,106,473,362.65 is: 549,404,202,812.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,890,638,254.76 : 992,100,265,749.45 = 398,106,473,362.65 : x
  2. Step 2: Convert to fraction form
    718,890,638,254.76/992,100,265,749.45 = 398,106,473,362.65/x
  3. Step 3: Cross multiply
    718,890,638,254.76x = 992,100,265,749.45 × 398,106,473,362.65
  4. Step 4: Simplify right side
    718,890,638,254.76x = 394,961,538,019,661,390,544,896
  5. Step 5: Solve for x
    x = 394,961,538,019,661,390,544,896/718,890,638,254.76
  6. Step 6: Final answer
    x = 549,404,202,812.41

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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.