Home / 920,940.18-1,270,878.30-513,041.46

Finding the Fourth Proportional to 920,940.18, 1,270,878.30 and 513,041.46

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Solution

The fourth proportional to 920,940.18, 1,270,878.30 and 513,041.46 is: 707,986.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,940.18 : 1,270,878.30 = 513,041.46 : x
  2. Step 2: Convert to fraction form
    920,940.18/1,270,878.30 = 513,041.46/x
  3. Step 3: Cross multiply
    920,940.18x = 1,270,878.30 × 513,041.46
  4. Step 4: Simplify right side
    920,940.18x = 652,013,258,514.32
  5. Step 5: Solve for x
    x = 652,013,258,514.32/920,940.18
  6. Step 6: Final answer
    x = 707,986.55

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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.