Home / 687,005.60-1,030,508.40-188,368.80

Finding the Fourth Proportional to 687,005.60, 1,030,508.40 and 188,368.80

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Solution

The fourth proportional to 687,005.60, 1,030,508.40 and 188,368.80 is: 282,553.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,005.60 : 1,030,508.40 = 188,368.80 : x
  2. Step 2: Convert to fraction form
    687,005.60/1,030,508.40 = 188,368.80/x
  3. Step 3: Cross multiply
    687,005.60x = 1,030,508.40 × 188,368.80
  4. Step 4: Simplify right side
    687,005.60x = 194,115,630,697.92
  5. Step 5: Solve for x
    x = 194,115,630,697.92/687,005.60
  6. Step 6: Final answer
    x = 282,553.20

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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.