Home / 405,979.40-608,969.10-106,459.40

Finding the Fourth Proportional to 405,979.40, 608,969.10 and 106,459.40

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Solution

The fourth proportional to 405,979.40, 608,969.10 and 106,459.40 is: 159,689.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,979.40 : 608,969.10 = 106,459.40 : x
  2. Step 2: Convert to fraction form
    405,979.40/608,969.10 = 106,459.40/x
  3. Step 3: Cross multiply
    405,979.40x = 608,969.10 × 106,459.40
  4. Step 4: Simplify right side
    405,979.40x = 64,830,485,004.54
  5. Step 5: Solve for x
    x = 64,830,485,004.54/405,979.40
  6. Step 6: Final answer
    x = 159,689.10

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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.