Home / 670,979.55-1,005,435.65-310,928.25

Finding the Fourth Proportional to 670,979.55, 1,005,435.65 and 310,928.25

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Solution

The fourth proportional to 670,979.55, 1,005,435.65 and 310,928.25 is: 465,913.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,979.55 : 1,005,435.65 = 310,928.25 : x
  2. Step 2: Convert to fraction form
    670,979.55/1,005,435.65 = 310,928.25/x
  3. Step 3: Cross multiply
    670,979.55x = 1,005,435.65 × 310,928.25
  4. Step 4: Simplify right side
    670,979.55x = 312,618,345,587.47
  5. Step 5: Solve for x
    x = 312,618,345,587.47/670,979.55
  6. Step 6: Final answer
    x = 465,913.37

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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.