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Finding the Fourth Proportional to 626,607.20, 864,715.02 and 340,124.78

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Solution

The fourth proportional to 626,607.20, 864,715.02 and 340,124.78 is: 469,370.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,607.20 : 864,715.02 = 340,124.78 : x
  2. Step 2: Convert to fraction form
    626,607.20/864,715.02 = 340,124.78/x
  3. Step 3: Cross multiply
    626,607.20x = 864,715.02 × 340,124.78
  4. Step 4: Simplify right side
    626,607.20x = 294,111,005,940.20
  5. Step 5: Solve for x
    x = 294,111,005,940.20/626,607.20
  6. Step 6: Final answer
    x = 469,370.61

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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.