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Finding the Fourth Proportional to 647,749.90, 893,889.86 and 357,373.71

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Solution

The fourth proportional to 647,749.90, 893,889.86 and 357,373.71 is: 493,172.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,749.90 : 893,889.86 = 357,373.71 : x
  2. Step 2: Convert to fraction form
    647,749.90/893,889.86 = 357,373.71/x
  3. Step 3: Cross multiply
    647,749.90x = 893,889.86 × 357,373.71
  4. Step 4: Simplify right side
    647,749.90x = 319,452,733,812.71
  5. Step 5: Solve for x
    x = 319,452,733,812.71/647,749.90
  6. Step 6: Final answer
    x = 493,172.96

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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.