Home / 643,948.52-965,528.93-307,092.20

Finding the Fourth Proportional to 643,948.52, 965,528.93 and 307,092.20

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Solution

The fourth proportional to 643,948.52, 965,528.93 and 307,092.20 is: 460,450.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,948.52 : 965,528.93 = 307,092.20 : x
  2. Step 2: Convert to fraction form
    643,948.52/965,528.93 = 307,092.20/x
  3. Step 3: Cross multiply
    643,948.52x = 965,528.93 × 307,092.20
  4. Step 4: Simplify right side
    643,948.52x = 296,506,399,217.43
  5. Step 5: Solve for x
    x = 296,506,399,217.43/643,948.52
  6. Step 6: Final answer
    x = 460,450.47

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.