Home / 418,631.60-627,947.40-396,980.30

Finding the Fourth Proportional to 418,631.60, 627,947.40 and 396,980.30

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Solution

The fourth proportional to 418,631.60, 627,947.40 and 396,980.30 is: 595,470.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,631.60 : 627,947.40 = 396,980.30 : x
  2. Step 2: Convert to fraction form
    418,631.60/627,947.40 = 396,980.30/x
  3. Step 3: Cross multiply
    418,631.60x = 627,947.40 × 396,980.30
  4. Step 4: Simplify right side
    418,631.60x = 249,282,747,236.22
  5. Step 5: Solve for x
    x = 249,282,747,236.22/418,631.60
  6. Step 6: Final answer
    x = 595,470.45

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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.