Home / 520,643,831.16-718,486,516.02-285,698,423.40

Finding the Fourth Proportional to 520,643,831.16, 718,486,516.02 and 285,698,423.40

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Solution

The fourth proportional to 520,643,831.16, 718,486,516.02 and 285,698,423.40 is: 394,262,742.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,643,831.16 : 718,486,516.02 = 285,698,423.40 : x
  2. Step 2: Convert to fraction form
    520,643,831.16/718,486,516.02 = 285,698,423.40/x
  3. Step 3: Cross multiply
    520,643,831.16x = 718,486,516.02 × 285,698,423.40
  4. Step 4: Simplify right side
    520,643,831.16x = 205,270,464,861,072,832
  5. Step 5: Solve for x
    x = 205,270,464,861,072,832/520,643,831.16
  6. Step 6: Final answer
    x = 394,262,742.73

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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.