Home / 1,205,875.20-1,664,140.80-776,985.60

Finding the Fourth Proportional to 1,205,875.20, 1,664,140.80 and 776,985.60

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Solution

The fourth proportional to 1,205,875.20, 1,664,140.80 and 776,985.60 is: 1,072,261.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,205,875.20 : 1,664,140.80 = 776,985.60 : x
  2. Step 2: Convert to fraction form
    1,205,875.20/1,664,140.80 = 776,985.60/x
  3. Step 3: Cross multiply
    1,205,875.20x = 1,664,140.80 × 776,985.60
  4. Step 4: Simplify right side
    1,205,875.20x = 1,293,013,437,972.48
  5. Step 5: Solve for x
    x = 1,293,013,437,972.48/1,205,875.20
  6. Step 6: Final answer
    x = 1,072,261.41

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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.