Home / 990,149,333.32-1,366,398,088.68-538,023,343.78

Finding the Fourth Proportional to 990,149,333.32, 1,366,398,088.68 and 538,023,343.78

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Solution

The fourth proportional to 990,149,333.32, 1,366,398,088.68 and 538,023,343.78 is: 742,467,872.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,149,333.32 : 1,366,398,088.68 = 538,023,343.78 : x
  2. Step 2: Convert to fraction form
    990,149,333.32/1,366,398,088.68 = 538,023,343.78/x
  3. Step 3: Cross multiply
    990,149,333.32x = 1,366,398,088.68 × 538,023,343.78
  4. Step 4: Simplify right side
    990,149,333.32x = 735,154,068,606,214,528
  5. Step 5: Solve for x
    x = 735,154,068,606,214,528/990,149,333.32
  6. Step 6: Final answer
    x = 742,467,872.14

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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.