Home / 687,374.10-1,030,186.35-612,141.30

Finding the Fourth Proportional to 687,374.10, 1,030,186.35 and 612,141.30

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Solution

The fourth proportional to 687,374.10, 1,030,186.35 and 612,141.30 is: 917,432.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,374.10 : 1,030,186.35 = 612,141.30 : x
  2. Step 2: Convert to fraction form
    687,374.10/1,030,186.35 = 612,141.30/x
  3. Step 3: Cross multiply
    687,374.10x = 1,030,186.35 × 612,141.30
  4. Step 4: Simplify right side
    687,374.10x = 630,619,611,531.26
  5. Step 5: Solve for x
    x = 630,619,611,531.26/687,374.10
  6. Step 6: Final answer
    x = 917,432.90

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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.