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Finding the Fourth Proportional to 824,427.10, 1,236,640.65 and 743,070.70

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Solution

The fourth proportional to 824,427.10, 1,236,640.65 and 743,070.70 is: 1,114,606.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    824,427.10 : 1,236,640.65 = 743,070.70 : x
  2. Step 2: Convert to fraction form
    824,427.10/1,236,640.65 = 743,070.70/x
  3. Step 3: Cross multiply
    824,427.10x = 1,236,640.65 × 743,070.70
  4. Step 4: Simplify right side
    824,427.10x = 918,911,433,443.96
  5. Step 5: Solve for x
    x = 918,911,433,443.96/824,427.10
  6. Step 6: Final answer
    x = 1,114,606.05

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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.