Home / 678,794.58-1,018,413.05-323,762.40

Finding the Fourth Proportional to 678,794.58, 1,018,413.05 and 323,762.40

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Solution

The fourth proportional to 678,794.58, 1,018,413.05 and 323,762.40 is: 485,749.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,794.58 : 1,018,413.05 = 323,762.40 : x
  2. Step 2: Convert to fraction form
    678,794.58/1,018,413.05 = 323,762.40/x
  3. Step 3: Cross multiply
    678,794.58x = 1,018,413.05 × 323,762.40
  4. Step 4: Simplify right side
    678,794.58x = 329,723,851,640.51
  5. Step 5: Solve for x
    x = 329,723,851,640.51/678,794.58
  6. Step 6: Final answer
    x = 485,749.09

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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.