Home / 1,218,032,586.60-1,680,839,960.38-661,103,676.24

Finding the Fourth Proportional to 1,218,032,586.60, 1,680,839,960.38 and 661,103,676.24

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Solution

The fourth proportional to 1,218,032,586.60, 1,680,839,960.38 and 661,103,676.24 is: 912,298,643.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,032,586.60 : 1,680,839,960.38 = 661,103,676.24 : x
  2. Step 2: Convert to fraction form
    1,218,032,586.60/1,680,839,960.38 = 661,103,676.24/x
  3. Step 3: Cross multiply
    1,218,032,586.60x = 1,680,839,960.38 × 661,103,676.24
  4. Step 4: Simplify right side
    1,218,032,586.60x = 1,111,209,476,978,313,984
  5. Step 5: Solve for x
    x = 1,111,209,476,978,313,984/1,218,032,586.60
  6. Step 6: Final answer
    x = 912,298,643.90

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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.