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Finding the Fourth Proportional to 644,620.40, 966,930.60 and 497,164.40

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Solution

The fourth proportional to 644,620.40, 966,930.60 and 497,164.40 is: 745,746.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,620.40 : 966,930.60 = 497,164.40 : x
  2. Step 2: Convert to fraction form
    644,620.40/966,930.60 = 497,164.40/x
  3. Step 3: Cross multiply
    644,620.40x = 966,930.60 × 497,164.40
  4. Step 4: Simplify right side
    644,620.40x = 480,723,471,590.64
  5. Step 5: Solve for x
    x = 480,723,471,590.64/644,620.40
  6. Step 6: Final answer
    x = 745,746.60

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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.