Home / 811,842,961.35-1,120,343,286.33-440,564,992.72

Finding the Fourth Proportional to 811,842,961.35, 1,120,343,286.33 and 440,564,992.72

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Solution

The fourth proportional to 811,842,961.35, 1,120,343,286.33 and 440,564,992.72 is: 607,979,689.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,842,961.35 : 1,120,343,286.33 = 440,564,992.72 : x
  2. Step 2: Convert to fraction form
    811,842,961.35/1,120,343,286.33 = 440,564,992.72/x
  3. Step 3: Cross multiply
    811,842,961.35x = 1,120,343,286.33 × 440,564,992.72
  4. Step 4: Simplify right side
    811,842,961.35x = 493,584,031,785,877,312
  5. Step 5: Solve for x
    x = 493,584,031,785,877,312/811,842,961.35
  6. Step 6: Final answer
    x = 607,979,689.77

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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.