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Finding the Fourth Proportional to 630,229.96, 869,790.88 and 358,338.60

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Solution

The fourth proportional to 630,229.96, 869,790.88 and 358,338.60 is: 494,549.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,229.96 : 869,790.88 = 358,338.60 : x
  2. Step 2: Convert to fraction form
    630,229.96/869,790.88 = 358,338.60/x
  3. Step 3: Cross multiply
    630,229.96x = 869,790.88 × 358,338.60
  4. Step 4: Simplify right side
    630,229.96x = 311,679,640,091.32
  5. Step 5: Solve for x
    x = 311,679,640,091.32/630,229.96
  6. Step 6: Final answer
    x = 494,549.07

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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.