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Finding the Fourth Proportional to 559,706.78, 772,395.62 and 317,989.76

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Solution

The fourth proportional to 559,706.78, 772,395.62 and 317,989.76 is: 438,826.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,706.78 : 772,395.62 = 317,989.76 : x
  2. Step 2: Convert to fraction form
    559,706.78/772,395.62 = 317,989.76/x
  3. Step 3: Cross multiply
    559,706.78x = 772,395.62 × 317,989.76
  4. Step 4: Simplify right side
    559,706.78x = 245,613,892,376.92
  5. Step 5: Solve for x
    x = 245,613,892,376.92/559,706.78
  6. Step 6: Final answer
    x = 438,826.01

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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.