Home / 256,771,970,578.66-385,094,308,749.78-86,787,780,565.86

Finding the Fourth Proportional to 256,771,970,578.66, 385,094,308,749.78 and 86,787,780,565.86

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Solution

The fourth proportional to 256,771,970,578.66, 385,094,308,749.78 and 86,787,780,565.86 is: 130,160,158,406.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,771,970,578.66 : 385,094,308,749.78 = 86,787,780,565.86 : x
  2. Step 2: Convert to fraction form
    256,771,970,578.66/385,094,308,749.78 = 86,787,780,565.86/x
  3. Step 3: Cross multiply
    256,771,970,578.66x = 385,094,308,749.78 × 86,787,780,565.86
  4. Step 4: Simplify right side
    256,771,970,578.66x = 33,421,480,364,937,448,521,728
  5. Step 5: Solve for x
    x = 33,421,480,364,937,448,521,728/256,771,970,578.66
  6. Step 6: Final answer
    x = 130,160,158,406.77

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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.