Home / 672,143,979-1,007,640,888.65-257,918,048.83

Finding the Fourth Proportional to 672,143,979, 1,007,640,888.65 and 257,918,048.83

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Solution

The fourth proportional to 672,143,979, 1,007,640,888.65 and 257,918,048.83 is: 386,656,401.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,143,979 : 1,007,640,888.65 = 257,918,048.83 : x
  2. Step 2: Convert to fraction form
    672,143,979/1,007,640,888.65 = 257,918,048.83/x
  3. Step 3: Cross multiply
    672,143,979x = 1,007,640,888.65 × 257,918,048.83
  4. Step 4: Simplify right side
    672,143,979x = 259,888,771,921,935,296
  5. Step 5: Solve for x
    x = 259,888,771,921,935,296/672,143,979
  6. Step 6: Final answer
    x = 386,656,401.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.