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Finding the Fourth Proportional to 880,617, 1,215,266.58 and 478,209

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Solution

The fourth proportional to 880,617, 1,215,266.58 and 478,209 is: 659,936.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,617 : 1,215,266.58 = 478,209 : x
  2. Step 2: Convert to fraction form
    880,617/1,215,266.58 = 478,209/x
  3. Step 3: Cross multiply
    880,617x = 1,215,266.58 × 478,209
  4. Step 4: Simplify right side
    880,617x = 581,151,415,955.22
  5. Step 5: Solve for x
    x = 581,151,415,955.22/880,617
  6. Step 6: Final answer
    x = 659,936.63

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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.