Home / 691,831.40-954,582.18-420,042.40

Finding the Fourth Proportional to 691,831.40, 954,582.18 and 420,042.40

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Solution

The fourth proportional to 691,831.40, 954,582.18 and 420,042.40 is: 579,570.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,831.40 : 954,582.18 = 420,042.40 : x
  2. Step 2: Convert to fraction form
    691,831.40/954,582.18 = 420,042.40/x
  3. Step 3: Cross multiply
    691,831.40x = 954,582.18 × 420,042.40
  4. Step 4: Simplify right side
    691,831.40x = 400,964,989,884.43
  5. Step 5: Solve for x
    x = 400,964,989,884.43/691,831.40
  6. Step 6: Final answer
    x = 579,570.38

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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.