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Finding the Fourth Proportional to 559,693.55, 772,395.15 and 317,971.73

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Solution

The fourth proportional to 559,693.55, 772,395.15 and 317,971.73 is: 438,811.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,693.55 : 772,395.15 = 317,971.73 : x
  2. Step 2: Convert to fraction form
    559,693.55/772,395.15 = 317,971.73/x
  3. Step 3: Cross multiply
    559,693.55x = 772,395.15 × 317,971.73
  4. Step 4: Simplify right side
    559,693.55x = 245,599,822,089.11
  5. Step 5: Solve for x
    x = 245,599,822,089.11/559,693.55
  6. Step 6: Final answer
    x = 438,811.24

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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.