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Finding the Fourth Proportional to 713,276.40, 984,637.96 and 455,491.06

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Solution

The fourth proportional to 713,276.40, 984,637.96 and 455,491.06 is: 628,779.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,276.40 : 984,637.96 = 455,491.06 : x
  2. Step 2: Convert to fraction form
    713,276.40/984,637.96 = 455,491.06/x
  3. Step 3: Cross multiply
    713,276.40x = 984,637.96 × 455,491.06
  4. Step 4: Simplify right side
    713,276.40x = 448,493,788,116.64
  5. Step 5: Solve for x
    x = 448,493,788,116.64/713,276.40
  6. Step 6: Final answer
    x = 628,779.79

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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.