Home / 459,429.12-689,106.42-290,456.64

Finding the Fourth Proportional to 459,429.12, 689,106.42 and 290,456.64

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Solution

The fourth proportional to 459,429.12, 689,106.42 and 290,456.64 is: 435,661.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,429.12 : 689,106.42 = 290,456.64 : x
  2. Step 2: Convert to fraction form
    459,429.12/689,106.42 = 290,456.64/x
  3. Step 3: Cross multiply
    459,429.12x = 689,106.42 × 290,456.64
  4. Step 4: Simplify right side
    459,429.12x = 200,155,535,355.63
  5. Step 5: Solve for x
    x = 200,155,535,355.63/459,429.12
  6. Step 6: Final answer
    x = 435,661.40

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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.