Home / 521,457.71-719,621.84-340,285.55

Finding the Fourth Proportional to 521,457.71, 719,621.84 and 340,285.55

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Solution

The fourth proportional to 521,457.71, 719,621.84 and 340,285.55 is: 469,600.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,457.71 : 719,621.84 = 340,285.55 : x
  2. Step 2: Convert to fraction form
    521,457.71/719,621.84 = 340,285.55/x
  3. Step 3: Cross multiply
    521,457.71x = 719,621.84 × 340,285.55
  4. Step 4: Simplify right side
    521,457.71x = 244,876,911,914.98
  5. Step 5: Solve for x
    x = 244,876,911,914.98/521,457.71
  6. Step 6: Final answer
    x = 469,600.71

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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.