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Finding the Fourth Proportional to 880,807.70, 1,321,211.55 and 383,143.70

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Solution

The fourth proportional to 880,807.70, 1,321,211.55 and 383,143.70 is: 574,715.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,807.70 : 1,321,211.55 = 383,143.70 : x
  2. Step 2: Convert to fraction form
    880,807.70/1,321,211.55 = 383,143.70/x
  3. Step 3: Cross multiply
    880,807.70x = 1,321,211.55 × 383,143.70
  4. Step 4: Simplify right side
    880,807.70x = 506,213,881,749.74
  5. Step 5: Solve for x
    x = 506,213,881,749.74/880,807.70
  6. Step 6: Final answer
    x = 574,715.55

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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.