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Finding the Fourth Proportional to 661,747.80, 992,621.70 and 262,483.80

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Solution

The fourth proportional to 661,747.80, 992,621.70 and 262,483.80 is: 393,725.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,747.80 : 992,621.70 = 262,483.80 : x
  2. Step 2: Convert to fraction form
    661,747.80/992,621.70 = 262,483.80/x
  3. Step 3: Cross multiply
    661,747.80x = 992,621.70 × 262,483.80
  4. Step 4: Simplify right side
    661,747.80x = 260,547,115,778.46
  5. Step 5: Solve for x
    x = 260,547,115,778.46/661,747.80
  6. Step 6: Final answer
    x = 393,725.70

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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.