Home / 1,231,398,257.55-1,699,308,593.64-666,878,564.22

Finding the Fourth Proportional to 1,231,398,257.55, 1,699,308,593.64 and 666,878,564.22

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Solution

The fourth proportional to 1,231,398,257.55, 1,699,308,593.64 and 666,878,564.22 is: 920,281,044.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,398,257.55 : 1,699,308,593.64 = 666,878,564.22 : x
  2. Step 2: Convert to fraction form
    1,231,398,257.55/1,699,308,593.64 = 666,878,564.22/x
  3. Step 3: Cross multiply
    1,231,398,257.55x = 1,699,308,593.64 × 666,878,564.22
  4. Step 4: Simplify right side
    1,231,398,257.55x = 1,133,232,475,093,350,784
  5. Step 5: Solve for x
    x = 1,133,232,475,093,350,784/1,231,398,257.55
  6. Step 6: Final answer
    x = 920,281,044.86

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Half scale
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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.