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Finding the Fourth Proportional to 626,980.32, 865,232.64 and 340,500.48

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Solution

The fourth proportional to 626,980.32, 865,232.64 and 340,500.48 is: 469,890.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,980.32 : 865,232.64 = 340,500.48 : x
  2. Step 2: Convert to fraction form
    626,980.32/865,232.64 = 340,500.48/x
  3. Step 3: Cross multiply
    626,980.32x = 865,232.64 × 340,500.48
  4. Step 4: Simplify right side
    626,980.32x = 294,612,129,231.67
  5. Step 5: Solve for x
    x = 294,612,129,231.67/626,980.32
  6. Step 6: Final answer
    x = 469,890.55

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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.