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Finding the Fourth Proportional to 729,056.40, 1,018,317 and 729,056.40

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Solution

The fourth proportional to 729,056.40, 1,018,317 and 729,056.40 is: 1,018,317

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,056.40 : 1,018,317 = 729,056.40 : x
  2. Step 2: Convert to fraction form
    729,056.40/1,018,317 = 729,056.40/x
  3. Step 3: Cross multiply
    729,056.40x = 1,018,317 × 729,056.40
  4. Step 4: Simplify right side
    729,056.40x = 742,410,526,078.80
  5. Step 5: Solve for x
    x = 742,410,526,078.80/729,056.40
  6. Step 6: Final answer
    x = 1,018,317

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.