Home / 1,245,765,321.47-1,868,833,791.78-458,758,461.60

Finding the Fourth Proportional to 1,245,765,321.47, 1,868,833,791.78 and 458,758,461.60

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Solution

The fourth proportional to 1,245,765,321.47, 1,868,833,791.78 and 458,758,461.60 is: 688,206,117.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,765,321.47 : 1,868,833,791.78 = 458,758,461.60 : x
  2. Step 2: Convert to fraction form
    1,245,765,321.47/1,868,833,791.78 = 458,758,461.60/x
  3. Step 3: Cross multiply
    1,245,765,321.47x = 1,868,833,791.78 × 458,758,461.60
  4. Step 4: Simplify right side
    1,245,765,321.47x = 857,343,315,303,087,616
  5. Step 5: Solve for x
    x = 857,343,315,303,087,616/1,245,765,321.47
  6. Step 6: Final answer
    x = 688,206,117.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.