Home / 512,491,161.60-768,736,742.40-507,713,587.20

Finding the Fourth Proportional to 512,491,161.60, 768,736,742.40 and 507,713,587.20

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Solution

The fourth proportional to 512,491,161.60, 768,736,742.40 and 507,713,587.20 is: 761,570,380.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,491,161.60 : 768,736,742.40 = 507,713,587.20 : x
  2. Step 2: Convert to fraction form
    512,491,161.60/768,736,742.40 = 507,713,587.20/x
  3. Step 3: Cross multiply
    512,491,161.60x = 768,736,742.40 × 507,713,587.20
  4. Step 4: Simplify right side
    512,491,161.60x = 390,298,089,096,346,304
  5. Step 5: Solve for x
    x = 390,298,089,096,346,304/512,491,161.60
  6. Step 6: Final answer
    x = 761,570,380.80

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1.5x scale

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.