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Finding the Fourth Proportional to 645,246.30, 967,869.45 and 365,310.30

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Solution

The fourth proportional to 645,246.30, 967,869.45 and 365,310.30 is: 547,965.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,246.30 : 967,869.45 = 365,310.30 : x
  2. Step 2: Convert to fraction form
    645,246.30/967,869.45 = 365,310.30/x
  3. Step 3: Cross multiply
    645,246.30x = 967,869.45 × 365,310.30
  4. Step 4: Simplify right side
    645,246.30x = 353,572,679,140.34
  5. Step 5: Solve for x
    x = 353,572,679,140.34/645,246.30
  6. Step 6: Final answer
    x = 547,965.45

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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.