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Finding the Fourth Proportional to 500,267.64, 749,615.18 and 386,693.49

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Solution

The fourth proportional to 500,267.64, 749,615.18 and 386,693.49 is: 579,432.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,267.64 : 749,615.18 = 386,693.49 : x
  2. Step 2: Convert to fraction form
    500,267.64/749,615.18 = 386,693.49/x
  3. Step 3: Cross multiply
    500,267.64x = 749,615.18 × 386,693.49
  4. Step 4: Simplify right side
    500,267.64x = 289,871,310,988.77
  5. Step 5: Solve for x
    x = 289,871,310,988.77/500,267.64
  6. Step 6: Final answer
    x = 579,432.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.