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Finding the Fourth Proportional to 520,084.30, 780,235.80 and 295,260.70

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Solution

The fourth proportional to 520,084.30, 780,235.80 and 295,260.70 is: 442,953.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,084.30 : 780,235.80 = 295,260.70 : x
  2. Step 2: Convert to fraction form
    520,084.30/780,235.80 = 295,260.70/x
  3. Step 3: Cross multiply
    520,084.30x = 780,235.80 × 295,260.70
  4. Step 4: Simplify right side
    520,084.30x = 230,372,968,473.06
  5. Step 5: Solve for x
    x = 230,372,968,473.06/520,084.30
  6. Step 6: Final answer
    x = 442,953.13

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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.