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Finding the Fourth Proportional to 562,073.20, 775,679.56 and 307,424.40

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Solution

The fourth proportional to 562,073.20, 775,679.56 and 307,424.40 is: 424,255.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,073.20 : 775,679.56 = 307,424.40 : x
  2. Step 2: Convert to fraction form
    562,073.20/775,679.56 = 307,424.40/x
  3. Step 3: Cross multiply
    562,073.20x = 775,679.56 × 307,424.40
  4. Step 4: Simplify right side
    562,073.20x = 238,462,823,325.26
  5. Step 5: Solve for x
    x = 238,462,823,325.26/562,073.20
  6. Step 6: Final answer
    x = 424,255.81

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1.5x scale

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.