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Finding the Fourth Proportional to 642,459.72, 886,570.50 and 370,539

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Solution

The fourth proportional to 642,459.72, 886,570.50 and 370,539 is: 511,330.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,459.72 : 886,570.50 = 370,539 : x
  2. Step 2: Convert to fraction form
    642,459.72/886,570.50 = 370,539/x
  3. Step 3: Cross multiply
    642,459.72x = 886,570.50 × 370,539
  4. Step 4: Simplify right side
    642,459.72x = 328,508,946,499.50
  5. Step 5: Solve for x
    x = 328,508,946,499.50/642,459.72
  6. Step 6: Final answer
    x = 511,330.03

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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.