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Finding the Fourth Proportional to 698,057.55, 963,214.47 and 392,075.28

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Solution

The fourth proportional to 698,057.55, 963,214.47 and 392,075.28 is: 541,004.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,057.55 : 963,214.47 = 392,075.28 : x
  2. Step 2: Convert to fraction form
    698,057.55/963,214.47 = 392,075.28/x
  3. Step 3: Cross multiply
    698,057.55x = 963,214.47 × 392,075.28
  4. Step 4: Simplify right side
    698,057.55x = 377,652,583,025.30
  5. Step 5: Solve for x
    x = 377,652,583,025.30/698,057.55
  6. Step 6: Final answer
    x = 541,004.94

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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.