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Finding the Fourth Proportional to 557,457.70, 769,278.72 and 324,869.81

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Solution

The fourth proportional to 557,457.70, 769,278.72 and 324,869.81 is: 448,312.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,457.70 : 769,278.72 = 324,869.81 : x
  2. Step 2: Convert to fraction form
    557,457.70/769,278.72 = 324,869.81/x
  3. Step 3: Cross multiply
    557,457.70x = 769,278.72 × 324,869.81
  4. Step 4: Simplify right side
    557,457.70x = 249,915,429,979.09
  5. Step 5: Solve for x
    x = 249,915,429,979.09/557,457.70
  6. Step 6: Final answer
    x = 448,312.81

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1.5x scale

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.