Home / 39,428,899,148.79-54,411,928,654.79-21,364,401,388.93

Finding the Fourth Proportional to 39,428,899,148.79, 54,411,928,654.79 and 21,364,401,388.93

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Solution

The fourth proportional to 39,428,899,148.79, 54,411,928,654.79 and 21,364,401,388.93 is: 29,482,899,832.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,428,899,148.79 : 54,411,928,654.79 = 21,364,401,388.93 : x
  2. Step 2: Convert to fraction form
    39,428,899,148.79/54,411,928,654.79 = 21,364,401,388.93/x
  3. Step 3: Cross multiply
    39,428,899,148.79x = 54,411,928,654.79 × 21,364,401,388.93
  4. Step 4: Simplify right side
    39,428,899,148.79x = 1,162,478,284,126,540,005,376
  5. Step 5: Solve for x
    x = 1,162,478,284,126,540,005,376/39,428,899,148.79
  6. Step 6: Final answer
    x = 29,482,899,832.93

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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.