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Finding the Fourth Proportional to 1,064,645,529.03, 1,469,267,238.42 and 641,392,428.33

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Solution

The fourth proportional to 1,064,645,529.03, 1,469,267,238.42 and 641,392,428.33 is: 885,155,534.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,064,645,529.03 : 1,469,267,238.42 = 641,392,428.33 : x
  2. Step 2: Convert to fraction form
    1,064,645,529.03/1,469,267,238.42 = 641,392,428.33/x
  3. Step 3: Cross multiply
    1,064,645,529.03x = 1,469,267,238.42 × 641,392,428.33
  4. Step 4: Simplify right side
    1,064,645,529.03x = 942,376,881,915,916,928
  5. Step 5: Solve for x
    x = 942,376,881,915,916,928/1,064,645,529.03
  6. Step 6: Final answer
    x = 885,155,534.14

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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.