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Finding the Fourth Proportional to 557,459.70, 769,281.47 and 324,871.81

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Solution

The fourth proportional to 557,459.70, 769,281.47 and 324,871.81 is: 448,315.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,459.70 : 769,281.47 = 324,871.81 : x
  2. Step 2: Convert to fraction form
    557,459.70/769,281.47 = 324,871.81/x
  3. Step 3: Cross multiply
    557,459.70x = 769,281.47 × 324,871.81
  4. Step 4: Simplify right side
    557,459.70x = 249,917,863,558.36
  5. Step 5: Solve for x
    x = 249,917,863,558.36/557,459.70
  6. Step 6: Final answer
    x = 448,315.57

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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.