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Finding the Fourth Proportional to 557,458.70, 769,280.09 and 324,870.81

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Solution

The fourth proportional to 557,458.70, 769,280.09 and 324,870.81 is: 448,314.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,458.70 : 769,280.09 = 324,870.81 : x
  2. Step 2: Convert to fraction form
    557,458.70/769,280.09 = 324,870.81/x
  3. Step 3: Cross multiply
    557,458.70x = 769,280.09 × 324,870.81
  4. Step 4: Simplify right side
    557,458.70x = 249,916,645,955.17
  5. Step 5: Solve for x
    x = 249,916,645,955.17/557,458.70
  6. Step 6: Final answer
    x = 448,314.19

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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.