Home / 459,430.12-689,107.92-290,457.64

Finding the Fourth Proportional to 459,430.12, 689,107.92 and 290,457.64

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Solution

The fourth proportional to 459,430.12, 689,107.92 and 290,457.64 is: 435,662.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,430.12 : 689,107.92 = 290,457.64 : x
  2. Step 2: Convert to fraction form
    459,430.12/689,107.92 = 290,457.64/x
  3. Step 3: Cross multiply
    459,430.12x = 689,107.92 × 290,457.64
  4. Step 4: Simplify right side
    459,430.12x = 200,156,660,148.51
  5. Step 5: Solve for x
    x = 200,156,660,148.51/459,430.12
  6. Step 6: Final answer
    x = 435,662.90

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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.