Home / 626,795.12-864,981.78-340,315.40

Finding the Fourth Proportional to 626,795.12, 864,981.78 and 340,315.40

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Solution

The fourth proportional to 626,795.12, 864,981.78 and 340,315.40 is: 469,637.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,795.12 : 864,981.78 = 340,315.40 : x
  2. Step 2: Convert to fraction form
    626,795.12/864,981.78 = 340,315.40/x
  3. Step 3: Cross multiply
    626,795.12x = 864,981.78 × 340,315.40
  4. Step 4: Simplify right side
    626,795.12x = 294,366,620,453.41
  5. Step 5: Solve for x
    x = 294,366,620,453.41/626,795.12
  6. Step 6: Final answer
    x = 469,637.70

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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.