Home / 487,413.02-672,571.36-280,748.62

Finding the Fourth Proportional to 487,413.02, 672,571.36 and 280,748.62

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Solution

The fourth proportional to 487,413.02, 672,571.36 and 280,748.62 is: 387,399.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,413.02 : 672,571.36 = 280,748.62 : x
  2. Step 2: Convert to fraction form
    487,413.02/672,571.36 = 280,748.62/x
  3. Step 3: Cross multiply
    487,413.02x = 672,571.36 × 280,748.62
  4. Step 4: Simplify right side
    487,413.02x = 188,823,484,492.98
  5. Step 5: Solve for x
    x = 188,823,484,492.98/487,413.02
  6. Step 6: Final answer
    x = 387,399.34

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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.