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Finding the Fourth Proportional to 614,428.25, 847,898.83 and 342,479.91

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Solution

The fourth proportional to 614,428.25, 847,898.83 and 342,479.91 is: 472,615.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,428.25 : 847,898.83 = 342,479.91 : x
  2. Step 2: Convert to fraction form
    614,428.25/847,898.83 = 342,479.91/x
  3. Step 3: Cross multiply
    614,428.25x = 847,898.83 × 342,479.91
  4. Step 4: Simplify right side
    614,428.25x = 290,388,314,987.51
  5. Step 5: Solve for x
    x = 290,388,314,987.51/614,428.25
  6. Step 6: Final answer
    x = 472,615.50

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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.