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Finding the Fourth Proportional to 660,104.38, 910,920.47 and 373,618.31

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Solution

The fourth proportional to 660,104.38, 910,920.47 and 373,618.31 is: 515,579.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,104.38 : 910,920.47 = 373,618.31 : x
  2. Step 2: Convert to fraction form
    660,104.38/910,920.47 = 373,618.31/x
  3. Step 3: Cross multiply
    660,104.38x = 910,920.47 × 373,618.31
  4. Step 4: Simplify right side
    660,104.38x = 340,336,564,677.71
  5. Step 5: Solve for x
    x = 340,336,564,677.71/660,104.38
  6. Step 6: Final answer
    x = 515,579.93

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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.