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Finding the Fourth Proportional to 642,627.45, 963,019.58 and 472,822.65

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Solution

The fourth proportional to 642,627.45, 963,019.58 and 472,822.65 is: 708,555.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,627.45 : 963,019.58 = 472,822.65 : x
  2. Step 2: Convert to fraction form
    642,627.45/963,019.58 = 472,822.65/x
  3. Step 3: Cross multiply
    642,627.45x = 963,019.58 × 472,822.65
  4. Step 4: Simplify right side
    642,627.45x = 455,337,467,453.37
  5. Step 5: Solve for x
    x = 455,337,467,453.37/642,627.45
  6. Step 6: Final answer
    x = 708,555.89

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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.