Home / 742,754.84-1,025,009.91-420,457.86

Finding the Fourth Proportional to 742,754.84, 1,025,009.91 and 420,457.86

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Solution

The fourth proportional to 742,754.84, 1,025,009.91 and 420,457.86 is: 580,236.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,754.84 : 1,025,009.91 = 420,457.86 : x
  2. Step 2: Convert to fraction form
    742,754.84/1,025,009.91 = 420,457.86/x
  3. Step 3: Cross multiply
    742,754.84x = 1,025,009.91 × 420,457.86
  4. Step 4: Simplify right side
    742,754.84x = 430,973,473,237.39
  5. Step 5: Solve for x
    x = 430,973,473,237.39/742,754.84
  6. Step 6: Final answer
    x = 580,236.51

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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.