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Finding the Fourth Proportional to 661,748.80, 992,623.20 and 262,484.80

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Solution

The fourth proportional to 661,748.80, 992,623.20 and 262,484.80 is: 393,727.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,748.80 : 992,623.20 = 262,484.80 : x
  2. Step 2: Convert to fraction form
    661,748.80/992,623.20 = 262,484.80/x
  3. Step 3: Cross multiply
    661,748.80x = 992,623.20 × 262,484.80
  4. Step 4: Simplify right side
    661,748.80x = 260,548,502,127.36
  5. Step 5: Solve for x
    x = 260,548,502,127.36/661,748.80
  6. Step 6: Final answer
    x = 393,727.20

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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.