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Finding the Fourth Proportional to 603,139.02, 904,708.88 and 378,657.12

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Solution

The fourth proportional to 603,139.02, 904,708.88 and 378,657.12 is: 567,985.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,139.02 : 904,708.88 = 378,657.12 : x
  2. Step 2: Convert to fraction form
    603,139.02/904,708.88 = 378,657.12/x
  3. Step 3: Cross multiply
    603,139.02x = 904,708.88 × 378,657.12
  4. Step 4: Simplify right side
    603,139.02x = 342,574,460,423.72
  5. Step 5: Solve for x
    x = 342,574,460,423.72/603,139.02
  6. Step 6: Final answer
    x = 567,985.90

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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.