Home / 990,882,748.15-1,366,148,819.89-811,606,192.11

Finding the Fourth Proportional to 990,882,748.15, 1,366,148,819.89 and 811,606,192.11

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Solution

The fourth proportional to 990,882,748.15, 1,366,148,819.89 and 811,606,192.11 is: 1,118,976,835.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,882,748.15 : 1,366,148,819.89 = 811,606,192.11 : x
  2. Step 2: Convert to fraction form
    990,882,748.15/1,366,148,819.89 = 811,606,192.11/x
  3. Step 3: Cross multiply
    990,882,748.15x = 1,366,148,819.89 × 811,606,192.11
  4. Step 4: Simplify right side
    990,882,748.15x = 1,108,774,841,561,300,992
  5. Step 5: Solve for x
    x = 1,108,774,841,561,300,992/990,882,748.15
  6. Step 6: Final answer
    x = 1,118,976,835.18

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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.