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Finding the Fourth Proportional to 578,995.76, 799,404.20 and 361,535.60

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Solution

The fourth proportional to 578,995.76, 799,404.20 and 361,535.60 is: 499,162.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,995.76 : 799,404.20 = 361,535.60 : x
  2. Step 2: Convert to fraction form
    578,995.76/799,404.20 = 361,535.60/x
  3. Step 3: Cross multiply
    578,995.76x = 799,404.20 × 361,535.60
  4. Step 4: Simplify right side
    578,995.76x = 289,013,077,089.52
  5. Step 5: Solve for x
    x = 289,013,077,089.52/578,995.76
  6. Step 6: Final answer
    x = 499,162.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.