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Finding the Fourth Proportional to 630,274.08, 869,790 and 343,804.32

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Solution

The fourth proportional to 630,274.08, 869,790 and 343,804.32 is: 474,456.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,274.08 : 869,790 = 343,804.32 : x
  2. Step 2: Convert to fraction form
    630,274.08/869,790 = 343,804.32/x
  3. Step 3: Cross multiply
    630,274.08x = 869,790 × 343,804.32
  4. Step 4: Simplify right side
    630,274.08x = 299,037,559,492.80
  5. Step 5: Solve for x
    x = 299,037,559,492.80/630,274.08
  6. Step 6: Final answer
    x = 474,456.38

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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.