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Finding the Fourth Proportional to 478,839,689.35, 718,259,534.03 and 478,839,689.35

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Solution

The fourth proportional to 478,839,689.35, 718,259,534.03 and 478,839,689.35 is: 718,259,534.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,839,689.35 : 718,259,534.03 = 478,839,689.35 : x
  2. Step 2: Convert to fraction form
    478,839,689.35/718,259,534.03 = 478,839,689.35/x
  3. Step 3: Cross multiply
    478,839,689.35x = 718,259,534.03 × 478,839,689.35
  4. Step 4: Simplify right side
    478,839,689.35x = 343,931,172,147,600,960
  5. Step 5: Solve for x
    x = 343,931,172,147,600,960/478,839,689.35
  6. Step 6: Final answer
    x = 718,259,534.03

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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.