Home / 627,209.46-865,549.80-340,729.74

Finding the Fourth Proportional to 627,209.46, 865,549.80 and 340,729.74

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Solution

The fourth proportional to 627,209.46, 865,549.80 and 340,729.74 is: 470,207.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,209.46 : 865,549.80 = 340,729.74 : x
  2. Step 2: Convert to fraction form
    627,209.46/865,549.80 = 340,729.74/x
  3. Step 3: Cross multiply
    627,209.46x = 865,549.80 × 340,729.74
  4. Step 4: Simplify right side
    627,209.46x = 294,918,558,311.05
  5. Step 5: Solve for x
    x = 294,918,558,311.05/627,209.46
  6. Step 6: Final answer
    x = 470,207.45

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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.