Home / 1,218,185,044.07-1,681,097,491.82-661,268,468.39

Finding the Fourth Proportional to 1,218,185,044.07, 1,681,097,491.82 and 661,268,468.39

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Solution

The fourth proportional to 1,218,185,044.07, 1,681,097,491.82 and 661,268,468.39 is: 912,551,643.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,185,044.07 : 1,681,097,491.82 = 661,268,468.39 : x
  2. Step 2: Convert to fraction form
    1,218,185,044.07/1,681,097,491.82 = 661,268,468.39/x
  3. Step 3: Cross multiply
    1,218,185,044.07x = 1,681,097,491.82 × 661,268,468.39
  4. Step 4: Simplify right side
    1,218,185,044.07x = 1,111,656,763,623,329,664
  5. Step 5: Solve for x
    x = 1,111,656,763,623,329,664/1,218,185,044.07
  6. Step 6: Final answer
    x = 912,551,643.15

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Double scale
Find fourth proportional to 1,218,185,045.07, 1,681,097,493.20 and 661,268,469.39
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1.5x scale

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.