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Finding the Fourth Proportional to 626,669.46, 864,805.62 and 340,189.74

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Solution

The fourth proportional to 626,669.46, 864,805.62 and 340,189.74 is: 469,462.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,669.46 : 864,805.62 = 340,189.74 : x
  2. Step 2: Convert to fraction form
    626,669.46/864,805.62 = 340,189.74/x
  3. Step 3: Cross multiply
    626,669.46x = 864,805.62 × 340,189.74
  4. Step 4: Simplify right side
    626,669.46x = 294,197,999,018.34
  5. Step 5: Solve for x
    x = 294,197,999,018.34/626,669.46
  6. Step 6: Final answer
    x = 469,462.80

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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.