Home / 1,288,329,384.72-1,777,918,057.56-716,166,164.46

Finding the Fourth Proportional to 1,288,329,384.72, 1,777,918,057.56 and 716,166,164.46

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Solution

The fourth proportional to 1,288,329,384.72, 1,777,918,057.56 and 716,166,164.46 is: 988,322,374.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,329,384.72 : 1,777,918,057.56 = 716,166,164.46 : x
  2. Step 2: Convert to fraction form
    1,288,329,384.72/1,777,918,057.56 = 716,166,164.46/x
  3. Step 3: Cross multiply
    1,288,329,384.72x = 1,777,918,057.56 × 716,166,164.46
  4. Step 4: Simplify right side
    1,288,329,384.72x = 1,273,284,756,006,918,656
  5. Step 5: Solve for x
    x = 1,273,284,756,006,918,656/1,288,329,384.72
  6. Step 6: Final answer
    x = 988,322,374.01

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Double scale
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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.