Home / 719,297,467.20-992,630,492.10-389,272,606.20

Finding the Fourth Proportional to 719,297,467.20, 992,630,492.10 and 389,272,606.20

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Solution

The fourth proportional to 719,297,467.20, 992,630,492.10 and 389,272,606.20 is: 537,196,189.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,297,467.20 : 992,630,492.10 = 389,272,606.20 : x
  2. Step 2: Convert to fraction form
    719,297,467.20/992,630,492.10 = 389,272,606.20/x
  3. Step 3: Cross multiply
    719,297,467.20x = 992,630,492.10 × 389,272,606.20
  4. Step 4: Simplify right side
    719,297,467.20x = 386,403,858,653,355,520
  5. Step 5: Solve for x
    x = 386,403,858,653,355,520/719,297,467.20
  6. Step 6: Final answer
    x = 537,196,189.72

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1.5x scale

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.