Home / 685,768.77-1,028,154.80-286,523.72

Finding the Fourth Proportional to 685,768.77, 1,028,154.80 and 286,523.72

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Solution

The fourth proportional to 685,768.77, 1,028,154.80 and 286,523.72 is: 429,577.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,768.77 : 1,028,154.80 = 286,523.72 : x
  2. Step 2: Convert to fraction form
    685,768.77/1,028,154.80 = 286,523.72/x
  3. Step 3: Cross multiply
    685,768.77x = 1,028,154.80 × 286,523.72
  4. Step 4: Simplify right side
    685,768.77x = 294,590,731,458.46
  5. Step 5: Solve for x
    x = 294,590,731,458.46/685,768.77
  6. Step 6: Final answer
    x = 429,577.35

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1.5x scale

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.