Home / 742,755.84-1,025,011.29-420,458.86

Finding the Fourth Proportional to 742,755.84, 1,025,011.29 and 420,458.86

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Solution

The fourth proportional to 742,755.84, 1,025,011.29 and 420,458.86 is: 580,237.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,755.84 : 1,025,011.29 = 420,458.86 : x
  2. Step 2: Convert to fraction form
    742,755.84/1,025,011.29 = 420,458.86/x
  3. Step 3: Cross multiply
    742,755.84x = 1,025,011.29 × 420,458.86
  4. Step 4: Simplify right side
    742,755.84x = 430,975,078,480.53
  5. Step 5: Solve for x
    x = 430,975,078,480.53/742,755.84
  6. Step 6: Final answer
    x = 580,237.89

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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.