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Finding the Fourth Proportional to 617,426.80, 926,140.20 and 302,498.80

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Solution

The fourth proportional to 617,426.80, 926,140.20 and 302,498.80 is: 453,748.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,426.80 : 926,140.20 = 302,498.80 : x
  2. Step 2: Convert to fraction form
    617,426.80/926,140.20 = 302,498.80/x
  3. Step 3: Cross multiply
    617,426.80x = 926,140.20 × 302,498.80
  4. Step 4: Simplify right side
    617,426.80x = 280,156,299,131.76
  5. Step 5: Solve for x
    x = 280,156,299,131.76/617,426.80
  6. Step 6: Final answer
    x = 453,748.20

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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.