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Finding the Fourth Proportional to 624,001.80, 936,002.70 and 520,321.80

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Solution

The fourth proportional to 624,001.80, 936,002.70 and 520,321.80 is: 780,482.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,001.80 : 936,002.70 = 520,321.80 : x
  2. Step 2: Convert to fraction form
    624,001.80/936,002.70 = 520,321.80/x
  3. Step 3: Cross multiply
    624,001.80x = 936,002.70 × 520,321.80
  4. Step 4: Simplify right side
    624,001.80x = 487,022,609,668.86
  5. Step 5: Solve for x
    x = 487,022,609,668.86/624,001.80
  6. Step 6: Final answer
    x = 780,482.70

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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.