Home / 638,068.08-880,529.40-351,581.36

Finding the Fourth Proportional to 638,068.08, 880,529.40 and 351,581.36

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Solution

The fourth proportional to 638,068.08, 880,529.40 and 351,581.36 is: 485,179.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,068.08 : 880,529.40 = 351,581.36 : x
  2. Step 2: Convert to fraction form
    638,068.08/880,529.40 = 351,581.36/x
  3. Step 3: Cross multiply
    638,068.08x = 880,529.40 × 351,581.36
  4. Step 4: Simplify right side
    638,068.08x = 309,577,723,971.98
  5. Step 5: Solve for x
    x = 309,577,723,971.98/638,068.08
  6. Step 6: Final answer
    x = 485,179.77

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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.