Home / 670,078.80-1,005,895.80-404,139.60

Finding the Fourth Proportional to 670,078.80, 1,005,895.80 and 404,139.60

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Solution

The fourth proportional to 670,078.80, 1,005,895.80 and 404,139.60 is: 606,678.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,078.80 : 1,005,895.80 = 404,139.60 : x
  2. Step 2: Convert to fraction form
    670,078.80/1,005,895.80 = 404,139.60/x
  3. Step 3: Cross multiply
    670,078.80x = 1,005,895.80 × 404,139.60
  4. Step 4: Simplify right side
    670,078.80x = 406,522,326,253.68
  5. Step 5: Solve for x
    x = 406,522,326,253.68/670,078.80
  6. Step 6: Final answer
    x = 606,678.39

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1.5x scale

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.