Home / 656,141.20-983,434.20-340,435.60

Finding the Fourth Proportional to 656,141.20, 983,434.20 and 340,435.60

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Solution

The fourth proportional to 656,141.20, 983,434.20 and 340,435.60 is: 510,249.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,141.20 : 983,434.20 = 340,435.60 : x
  2. Step 2: Convert to fraction form
    656,141.20/983,434.20 = 340,435.60/x
  3. Step 3: Cross multiply
    656,141.20x = 983,434.20 × 340,435.60
  4. Step 4: Simplify right side
    656,141.20x = 334,796,011,937.52
  5. Step 5: Solve for x
    x = 334,796,011,937.52/656,141.20
  6. Step 6: Final answer
    x = 510,249.95

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.