Home / 839,723,139.90-1,159,048,420.56-487,412,634.06

Finding the Fourth Proportional to 839,723,139.90, 1,159,048,420.56 and 487,412,634.06

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Solution

The fourth proportional to 839,723,139.90, 1,159,048,420.56 and 487,412,634.06 is: 672,763,220.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,723,139.90 : 1,159,048,420.56 = 487,412,634.06 : x
  2. Step 2: Convert to fraction form
    839,723,139.90/1,159,048,420.56 = 487,412,634.06/x
  3. Step 3: Cross multiply
    839,723,139.90x = 1,159,048,420.56 × 487,412,634.06
  4. Step 4: Simplify right side
    839,723,139.90x = 564,934,843,668,232,256
  5. Step 5: Solve for x
    x = 564,934,843,668,232,256/839,723,139.90
  6. Step 6: Final answer
    x = 672,763,220.19

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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.