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Finding the Fourth Proportional to 626,544.12, 864,628.71 and 340,064.20

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Solution

The fourth proportional to 626,544.12, 864,628.71 and 340,064.20 is: 469,287.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,544.12 : 864,628.71 = 340,064.20 : x
  2. Step 2: Convert to fraction form
    626,544.12/864,628.71 = 340,064.20/x
  3. Step 3: Cross multiply
    626,544.12x = 864,628.71 × 340,064.20
  4. Step 4: Simplify right side
    626,544.12x = 294,029,270,563.18
  5. Step 5: Solve for x
    x = 294,029,270,563.18/626,544.12
  6. Step 6: Final answer
    x = 469,287.42

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Double scale
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Similar ratio
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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.