Home / 431,043,361.20-646,565,041.80-189,178,657.20

Finding the Fourth Proportional to 431,043,361.20, 646,565,041.80 and 189,178,657.20

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Solution

The fourth proportional to 431,043,361.20, 646,565,041.80 and 189,178,657.20 is: 283,767,985.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,043,361.20 : 646,565,041.80 = 189,178,657.20 : x
  2. Step 2: Convert to fraction form
    431,043,361.20/646,565,041.80 = 189,178,657.20/x
  3. Step 3: Cross multiply
    431,043,361.20x = 646,565,041.80 × 189,178,657.20
  4. Step 4: Simplify right side
    431,043,361.20x = 122,316,306,400,185,856
  5. Step 5: Solve for x
    x = 122,316,306,400,185,856/431,043,361.20
  6. Step 6: Final answer
    x = 283,767,985.80

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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.