Home / 685,985.00-1,028,978.10-286,407.95

Finding the Fourth Proportional to 685,985.00, 1,028,978.10 and 286,407.95

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Solution

The fourth proportional to 685,985.00, 1,028,978.10 and 286,407.95 is: 429,612.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,985.00 : 1,028,978.10 = 286,407.95 : x
  2. Step 2: Convert to fraction form
    685,985.00/1,028,978.10 = 286,407.95/x
  3. Step 3: Cross multiply
    685,985.00x = 1,028,978.10 × 286,407.95
  4. Step 4: Simplify right side
    685,985.00x = 294,707,503,071.01
  5. Step 5: Solve for x
    x = 294,707,503,071.01/685,985.00
  6. Step 6: Final answer
    x = 429,612.17

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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.