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Finding the Fourth Proportional to 881,049, 1,215,848.70 and 478,641

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Solution

The fourth proportional to 881,049, 1,215,848.70 and 478,641 is: 660,525.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    881,049 : 1,215,848.70 = 478,641 : x
  2. Step 2: Convert to fraction form
    881,049/1,215,848.70 = 478,641/x
  3. Step 3: Cross multiply
    881,049x = 1,215,848.70 × 478,641
  4. Step 4: Simplify right side
    881,049x = 581,955,037,616.70
  5. Step 5: Solve for x
    x = 581,955,037,616.70/881,049
  6. Step 6: Final answer
    x = 660,525.17

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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.