Home / 745,417.71-1,028,406.15-422,940.96

Finding the Fourth Proportional to 745,417.71, 1,028,406.15 and 422,940.96

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Solution

The fourth proportional to 745,417.71, 1,028,406.15 and 422,940.96 is: 583,505.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,417.71 : 1,028,406.15 = 422,940.96 : x
  2. Step 2: Convert to fraction form
    745,417.71/1,028,406.15 = 422,940.96/x
  3. Step 3: Cross multiply
    745,417.71x = 1,028,406.15 × 422,940.96
  4. Step 4: Simplify right side
    745,417.71x = 434,955,084,350.90
  5. Step 5: Solve for x
    x = 434,955,084,350.90/745,417.71
  6. Step 6: Final answer
    x = 583,505.17

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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.