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Finding the Fourth Proportional to 708,852.70, 978,241.08 and 402,941.92

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Solution

The fourth proportional to 708,852.70, 978,241.08 and 402,941.92 is: 556,073.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,852.70 : 978,241.08 = 402,941.92 : x
  2. Step 2: Convert to fraction form
    708,852.70/978,241.08 = 402,941.92/x
  3. Step 3: Cross multiply
    708,852.70x = 978,241.08 × 402,941.92
  4. Step 4: Simplify right side
    708,852.70x = 394,174,338,998.07
  5. Step 5: Solve for x
    x = 394,174,338,998.07/708,852.70
  6. Step 6: Final answer
    x = 556,073.69

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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.