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Finding the Fourth Proportional to 609,915.73, 841,407.70 and 368,121.01

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Solution

The fourth proportional to 609,915.73, 841,407.70 and 368,121.01 is: 507,840.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,915.73 : 841,407.70 = 368,121.01 : x
  2. Step 2: Convert to fraction form
    609,915.73/841,407.70 = 368,121.01/x
  3. Step 3: Cross multiply
    609,915.73x = 841,407.70 × 368,121.01
  4. Step 4: Simplify right side
    609,915.73x = 309,739,849,321.96
  5. Step 5: Solve for x
    x = 309,739,849,321.96/609,915.73
  6. Step 6: Final answer
    x = 507,840.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.