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Finding the Fourth Proportional to 666,896.41, 920,065.82 and 437,580.28

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Solution

The fourth proportional to 666,896.41, 920,065.82 and 437,580.28 is: 603,695.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,896.41 : 920,065.82 = 437,580.28 : x
  2. Step 2: Convert to fraction form
    666,896.41/920,065.82 = 437,580.28/x
  3. Step 3: Cross multiply
    666,896.41x = 920,065.82 × 437,580.28
  4. Step 4: Simplify right side
    666,896.41x = 402,602,657,927.82
  5. Step 5: Solve for x
    x = 402,602,657,927.82/666,896.41
  6. Step 6: Final answer
    x = 603,695.95

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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.