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Finding the Fourth Proportional to 520,053.20, 778,524.60 and 309,582.80

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Solution

The fourth proportional to 520,053.20, 778,524.60 and 309,582.80 is: 463,448.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,053.20 : 778,524.60 = 309,582.80 : x
  2. Step 2: Convert to fraction form
    520,053.20/778,524.60 = 309,582.80/x
  3. Step 3: Cross multiply
    520,053.20x = 778,524.60 × 309,582.80
  4. Step 4: Simplify right side
    520,053.20x = 241,017,825,536.88
  5. Step 5: Solve for x
    x = 241,017,825,536.88/520,053.20
  6. Step 6: Final answer
    x = 463,448.40

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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.