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Finding the Fourth Proportional to 620,693.86, 931,502.85 and 461,141.28

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Solution

The fourth proportional to 620,693.86, 931,502.85 and 461,141.28 is: 692,055.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,693.86 : 931,502.85 = 461,141.28 : x
  2. Step 2: Convert to fraction form
    620,693.86/931,502.85 = 461,141.28/x
  3. Step 3: Cross multiply
    620,693.86x = 931,502.85 × 461,141.28
  4. Step 4: Simplify right side
    620,693.86x = 429,554,416,572.65
  5. Step 5: Solve for x
    x = 429,554,416,572.65/620,693.86
  6. Step 6: Final answer
    x = 692,055.21

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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.