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Finding the Fourth Proportional to 708,902.67, 978,343.92 and 403,075.02

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Solution

The fourth proportional to 708,902.67, 978,343.92 and 403,075.02 is: 556,276.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,902.67 : 978,343.92 = 403,075.02 : x
  2. Step 2: Convert to fraction form
    708,902.67/978,343.92 = 403,075.02/x
  3. Step 3: Cross multiply
    708,902.67x = 978,343.92 × 403,075.02
  4. Step 4: Simplify right side
    708,902.67x = 394,345,995,120.88
  5. Step 5: Solve for x
    x = 394,345,995,120.88/708,902.67
  6. Step 6: Final answer
    x = 556,276.64

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.