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Finding the Fourth Proportional to 603,698.76, 905,986.62 and 486,782.28

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Solution

The fourth proportional to 603,698.76, 905,986.62 and 486,782.28 is: 730,526.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,698.76 : 905,986.62 = 486,782.28 : x
  2. Step 2: Convert to fraction form
    603,698.76/905,986.62 = 486,782.28/x
  3. Step 3: Cross multiply
    603,698.76x = 905,986.62 × 486,782.28
  4. Step 4: Simplify right side
    603,698.76x = 441,018,232,533.09
  5. Step 5: Solve for x
    x = 441,018,232,533.09/603,698.76
  6. Step 6: Final answer
    x = 730,526.98

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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.