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Finding the Fourth Proportional to 567,417.69, 783,031.69 and 309,289.93

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Solution

The fourth proportional to 567,417.69, 783,031.69 and 309,289.93 is: 426,817.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,417.69 : 783,031.69 = 309,289.93 : x
  2. Step 2: Convert to fraction form
    567,417.69/783,031.69 = 309,289.93/x
  3. Step 3: Cross multiply
    567,417.69x = 783,031.69 × 309,289.93
  4. Step 4: Simplify right side
    567,417.69x = 242,183,815,016.92
  5. Step 5: Solve for x
    x = 242,183,815,016.92/567,417.69
  6. Step 6: Final answer
    x = 426,817.53

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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.