Home / 692,014.08-954,979.56-390,208.08

Finding the Fourth Proportional to 692,014.08, 954,979.56 and 390,208.08

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Solution

The fourth proportional to 692,014.08, 954,979.56 and 390,208.08 is: 538,487.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,014.08 : 954,979.56 = 390,208.08 : x
  2. Step 2: Convert to fraction form
    692,014.08/954,979.56 = 390,208.08/x
  3. Step 3: Cross multiply
    692,014.08x = 954,979.56 × 390,208.08
  4. Step 4: Simplify right side
    692,014.08x = 372,640,740,546.85
  5. Step 5: Solve for x
    x = 372,640,740,546.85/692,014.08
  6. Step 6: Final answer
    x = 538,487.22

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1.5x scale

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.