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Finding the Fourth Proportional to 626,650.76, 864,779.15 and 340,171.04

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Solution

The fourth proportional to 626,650.76, 864,779.15 and 340,171.04 is: 469,436.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,650.76 : 864,779.15 = 340,171.04 : x
  2. Step 2: Convert to fraction form
    626,650.76/864,779.15 = 340,171.04/x
  3. Step 3: Cross multiply
    626,650.76x = 864,779.15 × 340,171.04
  4. Step 4: Simplify right side
    626,650.76x = 294,172,822,825.82
  5. Step 5: Solve for x
    x = 294,172,822,825.82/626,650.76
  6. Step 6: Final answer
    x = 469,436.63

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Double scale
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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.