Home / 685,563.86-1,028,441.55-286,113.17

Finding the Fourth Proportional to 685,563.86, 1,028,441.55 and 286,113.17

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Solution

The fourth proportional to 685,563.86, 1,028,441.55 and 286,113.17 is: 429,209.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,563.86 : 1,028,441.55 = 286,113.17 : x
  2. Step 2: Convert to fraction form
    685,563.86/1,028,441.55 = 286,113.17/x
  3. Step 3: Cross multiply
    685,563.86x = 1,028,441.55 × 286,113.17
  4. Step 4: Simplify right side
    685,563.86x = 294,250,672,030.21
  5. Step 5: Solve for x
    x = 294,250,672,030.21/685,563.86
  6. Step 6: Final answer
    x = 429,209.72

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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.