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Finding the Fourth Proportional to 611,393.70, 917,090.55 and 546,075.30

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Solution

The fourth proportional to 611,393.70, 917,090.55 and 546,075.30 is: 819,112.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,393.70 : 917,090.55 = 546,075.30 : x
  2. Step 2: Convert to fraction form
    611,393.70/917,090.55 = 546,075.30/x
  3. Step 3: Cross multiply
    611,393.70x = 917,090.55 × 546,075.30
  4. Step 4: Simplify right side
    611,393.70x = 500,800,497,218.42
  5. Step 5: Solve for x
    x = 500,800,497,218.42/611,393.70
  6. Step 6: Final answer
    x = 819,112.95

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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.