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Finding the Fourth Proportional to 545,807.76, 753,163.56 and 402,647.28

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Solution

The fourth proportional to 545,807.76, 753,163.56 and 402,647.28 is: 555,615.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,807.76 : 753,163.56 = 402,647.28 : x
  2. Step 2: Convert to fraction form
    545,807.76/753,163.56 = 402,647.28/x
  3. Step 3: Cross multiply
    545,807.76x = 753,163.56 × 402,647.28
  4. Step 4: Simplify right side
    545,807.76x = 303,259,258,829.12
  5. Step 5: Solve for x
    x = 303,259,258,829.12/545,807.76
  6. Step 6: Final answer
    x = 555,615.51

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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.