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Finding the Fourth Proportional to 880,816.90, 1,215,533.43 and 478,408.90

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Solution

The fourth proportional to 880,816.90, 1,215,533.43 and 478,408.90 is: 660,207.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,816.90 : 1,215,533.43 = 478,408.90 : x
  2. Step 2: Convert to fraction form
    880,816.90/1,215,533.43 = 478,408.90/x
  3. Step 3: Cross multiply
    880,816.90x = 1,215,533.43 × 478,408.90
  4. Step 4: Simplify right side
    880,816.90x = 581,522,011,159.53
  5. Step 5: Solve for x
    x = 581,522,011,159.53/880,816.90
  6. Step 6: Final answer
    x = 660,207.60

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.