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Finding the Fourth Proportional to 603,912.60, 904,775.40 and 478,378.80

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Solution

The fourth proportional to 603,912.60, 904,775.40 and 478,378.80 is: 716,702.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,912.60 : 904,775.40 = 478,378.80 : x
  2. Step 2: Convert to fraction form
    603,912.60/904,775.40 = 478,378.80/x
  3. Step 3: Cross multiply
    603,912.60x = 904,775.40 × 478,378.80
  4. Step 4: Simplify right side
    603,912.60x = 432,825,370,121.52
  5. Step 5: Solve for x
    x = 432,825,370,121.52/603,912.60
  6. Step 6: Final answer
    x = 716,702.00

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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.