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Finding the Fourth Proportional to 545,808.76, 753,164.94 and 402,648.28

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Solution

The fourth proportional to 545,808.76, 753,164.94 and 402,648.28 is: 555,616.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,808.76 : 753,164.94 = 402,648.28 : x
  2. Step 2: Convert to fraction form
    545,808.76/753,164.94 = 402,648.28/x
  3. Step 3: Cross multiply
    545,808.76x = 753,164.94 × 402,648.28
  4. Step 4: Simplify right side
    545,808.76x = 303,260,567,647.30
  5. Step 5: Solve for x
    x = 303,260,567,647.30/545,808.76
  6. Step 6: Final answer
    x = 555,616.89

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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.