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Finding the Fourth Proportional to 520,622.40, 780,933.60 and 310,497.60

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Solution

The fourth proportional to 520,622.40, 780,933.60 and 310,497.60 is: 465,746.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,622.40 : 780,933.60 = 310,497.60 : x
  2. Step 2: Convert to fraction form
    520,622.40/780,933.60 = 310,497.60/x
  3. Step 3: Cross multiply
    520,622.40x = 780,933.60 × 310,497.60
  4. Step 4: Simplify right side
    520,622.40x = 242,478,008,559.36
  5. Step 5: Solve for x
    x = 242,478,008,559.36/520,622.40
  6. Step 6: Final answer
    x = 465,746.40

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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.