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Finding the Fourth Proportional to 665,298.45, 918,112.23 and 359,374.83

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Solution

The fourth proportional to 665,298.45, 918,112.23 and 359,374.83 is: 495,937.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,298.45 : 918,112.23 = 359,374.83 : x
  2. Step 2: Convert to fraction form
    665,298.45/918,112.23 = 359,374.83/x
  3. Step 3: Cross multiply
    665,298.45x = 918,112.23 × 359,374.83
  4. Step 4: Simplify right side
    665,298.45x = 329,946,426,577.17
  5. Step 5: Solve for x
    x = 329,946,426,577.17/665,298.45
  6. Step 6: Final answer
    x = 495,937.46

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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.