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Finding the Fourth Proportional to 917,322,053.10, 1,287,878,844.90 and 917,322,053.10

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Solution

The fourth proportional to 917,322,053.10, 1,287,878,844.90 and 917,322,053.10 is: 1,287,878,844.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,322,053.10 : 1,287,878,844.90 = 917,322,053.10 : x
  2. Step 2: Convert to fraction form
    917,322,053.10/1,287,878,844.90 = 917,322,053.10/x
  3. Step 3: Cross multiply
    917,322,053.10x = 1,287,878,844.90 × 917,322,053.10
  4. Step 4: Simplify right side
    917,322,053.10x = 1,181,399,666,147,724,544
  5. Step 5: Solve for x
    x = 1,181,399,666,147,724,544/917,322,053.10
  6. Step 6: Final answer
    x = 1,287,878,844.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.