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Finding the Fourth Proportional to 450,038.46, 620,760.44 and 288,637.86

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Solution

The fourth proportional to 450,038.46, 620,760.44 and 288,637.86 is: 398,132.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,038.46 : 620,760.44 = 288,637.86 : x
  2. Step 2: Convert to fraction form
    450,038.46/620,760.44 = 288,637.86/x
  3. Step 3: Cross multiply
    450,038.46x = 620,760.44 × 288,637.86
  4. Step 4: Simplify right side
    450,038.46x = 179,174,968,023.71
  5. Step 5: Solve for x
    x = 179,174,968,023.71/450,038.46
  6. Step 6: Final answer
    x = 398,132.57

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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.