Home / 390,831.28-581,976.35-376,466.94

Finding the Fourth Proportional to 390,831.28, 581,976.35 and 376,466.94

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Solution

The fourth proportional to 390,831.28, 581,976.35 and 376,466.94 is: 560,586.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,831.28 : 581,976.35 = 376,466.94 : x
  2. Step 2: Convert to fraction form
    390,831.28/581,976.35 = 376,466.94/x
  3. Step 3: Cross multiply
    390,831.28x = 581,976.35 × 376,466.94
  4. Step 4: Simplify right side
    390,831.28x = 219,094,858,760.45
  5. Step 5: Solve for x
    x = 219,094,858,760.45/390,831.28
  6. Step 6: Final answer
    x = 560,586.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.