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Finding the Fourth Proportional to 708,848.03, 978,211.82 and 402,926.28

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Solution

The fourth proportional to 708,848.03, 978,211.82 and 402,926.28 is: 556,039.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,848.03 : 978,211.82 = 402,926.28 : x
  2. Step 2: Convert to fraction form
    708,848.03/978,211.82 = 402,926.28/x
  3. Step 3: Cross multiply
    708,848.03x = 978,211.82 × 402,926.28
  4. Step 4: Simplify right side
    708,848.03x = 394,147,247,670.00
  5. Step 5: Solve for x
    x = 394,147,247,670.00/708,848.03
  6. Step 6: Final answer
    x = 556,039.14

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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.