Home / 745,415.70-1,118,123.55-664,545.30

Finding the Fourth Proportional to 745,415.70, 1,118,123.55 and 664,545.30

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Solution

The fourth proportional to 745,415.70, 1,118,123.55 and 664,545.30 is: 996,817.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,415.70 : 1,118,123.55 = 664,545.30 : x
  2. Step 2: Convert to fraction form
    745,415.70/1,118,123.55 = 664,545.30/x
  3. Step 3: Cross multiply
    745,415.70x = 1,118,123.55 × 664,545.30
  4. Step 4: Simplify right side
    745,415.70x = 743,043,749,971.82
  5. Step 5: Solve for x
    x = 743,043,749,971.82/745,415.70
  6. Step 6: Final answer
    x = 996,817.95

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1.5x scale

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.