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Finding the Fourth Proportional to 624,000.30, 936,000.45 and 520,320.30

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Solution

The fourth proportional to 624,000.30, 936,000.45 and 520,320.30 is: 780,480.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,000.30 : 936,000.45 = 520,320.30 : x
  2. Step 2: Convert to fraction form
    624,000.30/936,000.45 = 520,320.30/x
  3. Step 3: Cross multiply
    624,000.30x = 936,000.45 × 520,320.30
  4. Step 4: Simplify right side
    624,000.30x = 487,020,034,944.14
  5. Step 5: Solve for x
    x = 487,020,034,944.14/624,000.30
  6. Step 6: Final answer
    x = 780,480.45

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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.