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Finding the Fourth Proportional to 617,859.40, 926,789.10 and 493,443.40

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Solution

The fourth proportional to 617,859.40, 926,789.10 and 493,443.40 is: 740,165.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,859.40 : 926,789.10 = 493,443.40 : x
  2. Step 2: Convert to fraction form
    617,859.40/926,789.10 = 493,443.40/x
  3. Step 3: Cross multiply
    617,859.40x = 926,789.10 × 493,443.40
  4. Step 4: Simplify right side
    617,859.40x = 457,317,964,586.94
  5. Step 5: Solve for x
    x = 457,317,964,586.94/617,859.40
  6. Step 6: Final answer
    x = 740,165.10

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Half scale
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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.