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Finding the Fourth Proportional to 385,988.64, 579,872.88 and 370,045.60

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Solution

The fourth proportional to 385,988.64, 579,872.88 and 370,045.60 is: 555,921.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,988.64 : 579,872.88 = 370,045.60 : x
  2. Step 2: Convert to fraction form
    385,988.64/579,872.88 = 370,045.60/x
  3. Step 3: Cross multiply
    385,988.64x = 579,872.88 × 370,045.60
  4. Step 4: Simplify right side
    385,988.64x = 214,579,407,803.33
  5. Step 5: Solve for x
    x = 214,579,407,803.33/385,988.64
  6. Step 6: Final answer
    x = 555,921.56

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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.