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Finding the Fourth Proportional to 520,022, 778,779.12 and 253,120.52

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Solution

The fourth proportional to 520,022, 778,779.12 and 253,120.52 is: 379,070.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,022 : 778,779.12 = 253,120.52 : x
  2. Step 2: Convert to fraction form
    520,022/778,779.12 = 253,120.52/x
  3. Step 3: Cross multiply
    520,022x = 778,779.12 × 253,120.52
  4. Step 4: Simplify right side
    520,022x = 197,124,975,819.54
  5. Step 5: Solve for x
    x = 197,124,975,819.54/520,022
  6. Step 6: Final answer
    x = 379,070.45

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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.