Home / 723,149.10-997,878.69-400,831.77

Finding the Fourth Proportional to 723,149.10, 997,878.69 and 400,831.77

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Solution

The fourth proportional to 723,149.10, 997,878.69 and 400,831.77 is: 553,110.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,149.10 : 997,878.69 = 400,831.77 : x
  2. Step 2: Convert to fraction form
    723,149.10/997,878.69 = 400,831.77/x
  3. Step 3: Cross multiply
    723,149.10x = 997,878.69 × 400,831.77
  4. Step 4: Simplify right side
    723,149.10x = 399,981,485,300.03
  5. Step 5: Solve for x
    x = 399,981,485,300.03/723,149.10
  6. Step 6: Final answer
    x = 553,110.67

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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.