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Finding the Fourth Proportional to 620,573.65, 856,461.15 and 375,693.38

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Solution

The fourth proportional to 620,573.65, 856,461.15 and 375,693.38 is: 518,498.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,573.65 : 856,461.15 = 375,693.38 : x
  2. Step 2: Convert to fraction form
    620,573.65/856,461.15 = 375,693.38/x
  3. Step 3: Cross multiply
    620,573.65x = 856,461.15 × 375,693.38
  4. Step 4: Simplify right side
    620,573.65x = 321,766,782,403.72
  5. Step 5: Solve for x
    x = 321,766,782,403.72/620,573.65
  6. Step 6: Final answer
    x = 518,498.95

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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.