Home / 565,507,831.77-780,407,989.74-311,218,466.22

Finding the Fourth Proportional to 565,507,831.77, 780,407,989.74 and 311,218,466.22

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Solution

The fourth proportional to 565,507,831.77, 780,407,989.74 and 311,218,466.22 is: 429,485,435.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,507,831.77 : 780,407,989.74 = 311,218,466.22 : x
  2. Step 2: Convert to fraction form
    565,507,831.77/780,407,989.74 = 311,218,466.22/x
  3. Step 3: Cross multiply
    565,507,831.77x = 780,407,989.74 × 311,218,466.22
  4. Step 4: Simplify right side
    565,507,831.77x = 242,877,377,592,716,320
  5. Step 5: Solve for x
    x = 242,877,377,592,716,320/565,507,831.77
  6. Step 6: Final answer
    x = 429,485,435.83

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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.