Home / 621,831.60-933,438.60-385,441.20

Finding the Fourth Proportional to 621,831.60, 933,438.60 and 385,441.20

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Solution

The fourth proportional to 621,831.60, 933,438.60 and 385,441.20 is: 578,590.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,831.60 : 933,438.60 = 385,441.20 : x
  2. Step 2: Convert to fraction form
    621,831.60/933,438.60 = 385,441.20/x
  3. Step 3: Cross multiply
    621,831.60x = 933,438.60 × 385,441.20
  4. Step 4: Simplify right side
    621,831.60x = 359,785,694,110.32
  5. Step 5: Solve for x
    x = 359,785,694,110.32/621,831.60
  6. Step 6: Final answer
    x = 578,590.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.