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Finding the Fourth Proportional to 520,029.90, 778,732.65 and 415,053.90

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Solution

The fourth proportional to 520,029.90, 778,732.65 and 415,053.90 is: 621,533.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,029.90 : 778,732.65 = 415,053.90 : x
  2. Step 2: Convert to fraction form
    520,029.90/778,732.65 = 415,053.90/x
  3. Step 3: Cross multiply
    520,029.90x = 778,732.65 × 415,053.90
  4. Step 4: Simplify right side
    520,029.90x = 323,216,023,439.84
  5. Step 5: Solve for x
    x = 323,216,023,439.84/520,029.90
  6. Step 6: Final answer
    x = 621,533.54

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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.