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Finding the Fourth Proportional to 577,875.40, 866,813.10 and 388,918.60

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Solution

The fourth proportional to 577,875.40, 866,813.10 and 388,918.60 is: 583,377.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,875.40 : 866,813.10 = 388,918.60 : x
  2. Step 2: Convert to fraction form
    577,875.40/866,813.10 = 388,918.60/x
  3. Step 3: Cross multiply
    577,875.40x = 866,813.10 × 388,918.60
  4. Step 4: Simplify right side
    577,875.40x = 337,119,737,313.66
  5. Step 5: Solve for x
    x = 337,119,737,313.66/577,875.40
  6. Step 6: Final answer
    x = 583,377.90

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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.