Home / 630,385.26-869,933.70-343,911.36

Finding the Fourth Proportional to 630,385.26, 869,933.70 and 343,911.36

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Solution

The fourth proportional to 630,385.26, 869,933.70 and 343,911.36 is: 474,598.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,385.26 : 869,933.70 = 343,911.36 : x
  2. Step 2: Convert to fraction form
    630,385.26/869,933.70 = 343,911.36/x
  3. Step 3: Cross multiply
    630,385.26x = 869,933.70 × 343,911.36
  4. Step 4: Simplify right side
    630,385.26x = 299,180,081,876.83
  5. Step 5: Solve for x
    x = 299,180,081,876.83/630,385.26
  6. Step 6: Final answer
    x = 474,598.79

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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.