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Finding the Fourth Proportional to 577,810.40, 866,715.60 and 388,853.60

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Solution

The fourth proportional to 577,810.40, 866,715.60 and 388,853.60 is: 583,280.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,810.40 : 866,715.60 = 388,853.60 : x
  2. Step 2: Convert to fraction form
    577,810.40/866,715.60 = 388,853.60/x
  3. Step 3: Cross multiply
    577,810.40x = 866,715.60 × 388,853.60
  4. Step 4: Simplify right side
    577,810.40x = 337,025,481,236.16
  5. Step 5: Solve for x
    x = 337,025,481,236.16/577,810.40
  6. Step 6: Final answer
    x = 583,280.40

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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.