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Finding the Fourth Proportional to 520,095.40, 780,145.53 and 220,500.70

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Solution

The fourth proportional to 520,095.40, 780,145.53 and 220,500.70 is: 330,752.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,095.40 : 780,145.53 = 220,500.70 : x
  2. Step 2: Convert to fraction form
    520,095.40/780,145.53 = 220,500.70/x
  3. Step 3: Cross multiply
    520,095.40x = 780,145.53 × 220,500.70
  4. Step 4: Simplify right side
    520,095.40x = 172,022,635,466.87
  5. Step 5: Solve for x
    x = 172,022,635,466.87/520,095.40
  6. Step 6: Final answer
    x = 330,752.08

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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.