Home / 831,030.20-1,246,545.30-689,312.60

Finding the Fourth Proportional to 831,030.20, 1,246,545.30 and 689,312.60

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Solution

The fourth proportional to 831,030.20, 1,246,545.30 and 689,312.60 is: 1,033,968.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,030.20 : 1,246,545.30 = 689,312.60 : x
  2. Step 2: Convert to fraction form
    831,030.20/1,246,545.30 = 689,312.60/x
  3. Step 3: Cross multiply
    831,030.20x = 1,246,545.30 × 689,312.60
  4. Step 4: Simplify right side
    831,030.20x = 859,259,381,760.78
  5. Step 5: Solve for x
    x = 859,259,381,760.78/831,030.20
  6. Step 6: Final answer
    x = 1,033,968.90

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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.