Home / 920,851.34-1,270,970.87-618,870.38

Finding the Fourth Proportional to 920,851.34, 1,270,970.87 and 618,870.38

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Solution

The fourth proportional to 920,851.34, 1,270,970.87 and 618,870.38 is: 854,172.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,851.34 : 1,270,970.87 = 618,870.38 : x
  2. Step 2: Convert to fraction form
    920,851.34/1,270,970.87 = 618,870.38/x
  3. Step 3: Cross multiply
    920,851.34x = 1,270,970.87 × 618,870.38
  4. Step 4: Simplify right side
    920,851.34x = 786,566,215,836.62
  5. Step 5: Solve for x
    x = 786,566,215,836.62/920,851.34
  6. Step 6: Final answer
    x = 854,172.86

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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.