Home / 747,438.19-1,031,450.31-407,908.87

Finding the Fourth Proportional to 747,438.19, 1,031,450.31 and 407,908.87

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Solution

The fourth proportional to 747,438.19, 1,031,450.31 and 407,908.87 is: 562,906.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,438.19 : 1,031,450.31 = 407,908.87 : x
  2. Step 2: Convert to fraction form
    747,438.19/1,031,450.31 = 407,908.87/x
  3. Step 3: Cross multiply
    747,438.19x = 1,031,450.31 × 407,908.87
  4. Step 4: Simplify right side
    747,438.19x = 420,737,730,413.25
  5. Step 5: Solve for x
    x = 420,737,730,413.25/747,438.19
  6. Step 6: Final answer
    x = 562,906.39

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.