Home / 687,745.87-947,127.45-496,456.27

Finding the Fourth Proportional to 687,745.87, 947,127.45 and 496,456.27

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Solution

The fourth proportional to 687,745.87, 947,127.45 and 496,456.27 is: 683,693.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,745.87 : 947,127.45 = 496,456.27 : x
  2. Step 2: Convert to fraction form
    687,745.87/947,127.45 = 496,456.27/x
  3. Step 3: Cross multiply
    687,745.87x = 947,127.45 × 496,456.27
  4. Step 4: Simplify right side
    687,745.87x = 470,207,361,041.61
  5. Step 5: Solve for x
    x = 470,207,361,041.61/687,745.87
  6. Step 6: Final answer
    x = 683,693.47

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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.