Home / 729,690.72-1,006,963.40-407,405.76

Finding the Fourth Proportional to 729,690.72, 1,006,963.40 and 407,405.76

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Solution

The fourth proportional to 729,690.72, 1,006,963.40 and 407,405.76 is: 562,214.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,690.72 : 1,006,963.40 = 407,405.76 : x
  2. Step 2: Convert to fraction form
    729,690.72/1,006,963.40 = 407,405.76/x
  3. Step 3: Cross multiply
    729,690.72x = 1,006,963.40 × 407,405.76
  4. Step 4: Simplify right side
    729,690.72x = 410,242,689,269.18
  5. Step 5: Solve for x
    x = 410,242,689,269.18/729,690.72
  6. Step 6: Final answer
    x = 562,214.48

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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.