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Finding the Fourth Proportional to 603,698.80, 904,511.40 and 393,228.40

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Solution

The fourth proportional to 603,698.80, 904,511.40 and 393,228.40 is: 589,167.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,698.80 : 904,511.40 = 393,228.40 : x
  2. Step 2: Convert to fraction form
    603,698.80/904,511.40 = 393,228.40/x
  3. Step 3: Cross multiply
    603,698.80x = 904,511.40 × 393,228.40
  4. Step 4: Simplify right side
    603,698.80x = 355,679,570,603.76
  5. Step 5: Solve for x
    x = 355,679,570,603.76/603,698.80
  6. Step 6: Final answer
    x = 589,167.26

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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.