Home / 839,721,005.87-1,159,045,501.73-487,410,498.63

Finding the Fourth Proportional to 839,721,005.87, 1,159,045,501.73 and 487,410,498.63

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Solution

The fourth proportional to 839,721,005.87, 1,159,045,501.73 and 487,410,498.63 is: 672,760,288.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,721,005.87 : 1,159,045,501.73 = 487,410,498.63 : x
  2. Step 2: Convert to fraction form
    839,721,005.87/1,159,045,501.73 = 487,410,498.63/x
  3. Step 3: Cross multiply
    839,721,005.87x = 1,159,045,501.73 × 487,410,498.63
  4. Step 4: Simplify right side
    839,721,005.87x = 564,930,945,930,640,704
  5. Step 5: Solve for x
    x = 564,930,945,930,640,704/839,721,005.87
  6. Step 6: Final answer
    x = 672,760,288.22

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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.