Home / 661,084,985.20-991,627,477.80-354,974,969.20

Finding the Fourth Proportional to 661,084,985.20, 991,627,477.80 and 354,974,969.20

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Solution

The fourth proportional to 661,084,985.20, 991,627,477.80 and 354,974,969.20 is: 532,462,453.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,084,985.20 : 991,627,477.80 = 354,974,969.20 : x
  2. Step 2: Convert to fraction form
    661,084,985.20/991,627,477.80 = 354,974,969.20/x
  3. Step 3: Cross multiply
    661,084,985.20x = 991,627,477.80 × 354,974,969.20
  4. Step 4: Simplify right side
    661,084,985.20x = 352,002,933,389,928,640
  5. Step 5: Solve for x
    x = 352,002,933,389,928,640/661,084,985.20
  6. Step 6: Final answer
    x = 532,462,453.80

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Double scale
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Similar ratio
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1.5x scale

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.