Home / 745,099.70-1,028,209.01-422,790.57

Finding the Fourth Proportional to 745,099.70, 1,028,209.01 and 422,790.57

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Solution

The fourth proportional to 745,099.70, 1,028,209.01 and 422,790.57 is: 583,434.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,099.70 : 1,028,209.01 = 422,790.57 : x
  2. Step 2: Convert to fraction form
    745,099.70/1,028,209.01 = 422,790.57/x
  3. Step 3: Cross multiply
    745,099.70x = 1,028,209.01 × 422,790.57
  4. Step 4: Simplify right side
    745,099.70x = 434,717,071,303.08
  5. Step 5: Solve for x
    x = 434,717,071,303.08/745,099.70
  6. Step 6: Final answer
    x = 583,434.77

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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.