Home / 436,428,312.30-654,642,468.45-389,076,919.20

Finding the Fourth Proportional to 436,428,312.30, 654,642,468.45 and 389,076,919.20

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Solution

The fourth proportional to 436,428,312.30, 654,642,468.45 and 389,076,919.20 is: 583,615,378.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,428,312.30 : 654,642,468.45 = 389,076,919.20 : x
  2. Step 2: Convert to fraction form
    436,428,312.30/654,642,468.45 = 389,076,919.20/x
  3. Step 3: Cross multiply
    436,428,312.30x = 654,642,468.45 × 389,076,919.20
  4. Step 4: Simplify right side
    436,428,312.30x = 254,706,274,802,009,216
  5. Step 5: Solve for x
    x = 254,706,274,802,009,216/436,428,312.30
  6. Step 6: Final answer
    x = 583,615,378.80

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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.