Home / 839,721,006.87-1,159,045,503.11-487,410,499.63

Finding the Fourth Proportional to 839,721,006.87, 1,159,045,503.11 and 487,410,499.63

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Solution

The fourth proportional to 839,721,006.87, 1,159,045,503.11 and 487,410,499.63 is: 672,760,289.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,721,006.87 : 1,159,045,503.11 = 487,410,499.63 : x
  2. Step 2: Convert to fraction form
    839,721,006.87/1,159,045,503.11 = 487,410,499.63/x
  3. Step 3: Cross multiply
    839,721,006.87x = 1,159,045,503.11 × 487,410,499.63
  4. Step 4: Simplify right side
    839,721,006.87x = 564,930,947,764,749,760
  5. Step 5: Solve for x
    x = 564,930,947,764,749,760/839,721,006.87
  6. Step 6: Final answer
    x = 672,760,289.60

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Double scale
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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.