Home / 685,980.06-1,028,970.10-286,403.32

Finding the Fourth Proportional to 685,980.06, 1,028,970.10 and 286,403.32

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Solution

The fourth proportional to 685,980.06, 1,028,970.10 and 286,403.32 is: 429,604.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,980.06 : 1,028,970.10 = 286,403.32 : x
  2. Step 2: Convert to fraction form
    685,980.06/1,028,970.10 = 286,403.32/x
  3. Step 3: Cross multiply
    685,980.06x = 1,028,970.10 × 286,403.32
  4. Step 4: Simplify right side
    685,980.06x = 294,700,452,820.73
  5. Step 5: Solve for x
    x = 294,700,452,820.73/685,980.06
  6. Step 6: Final answer
    x = 429,604.98

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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.