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Finding the Fourth Proportional to 425,225.16, 637,838.62 and 399,243.60

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Solution

The fourth proportional to 425,225.16, 637,838.62 and 399,243.60 is: 598,866.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,225.16 : 637,838.62 = 399,243.60 : x
  2. Step 2: Convert to fraction form
    425,225.16/637,838.62 = 399,243.60/x
  3. Step 3: Cross multiply
    425,225.16x = 637,838.62 × 399,243.60
  4. Step 4: Simplify right side
    425,225.16x = 254,652,985,869.72
  5. Step 5: Solve for x
    x = 254,652,985,869.72/425,225.16
  6. Step 6: Final answer
    x = 598,866.22

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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.