Home / 627,254.81-865,629.34-355,322.62

Finding the Fourth Proportional to 627,254.81, 865,629.34 and 355,322.62

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Solution

The fourth proportional to 627,254.81, 865,629.34 and 355,322.62 is: 490,355.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,254.81 : 865,629.34 = 355,322.62 : x
  2. Step 2: Convert to fraction form
    627,254.81/865,629.34 = 355,322.62/x
  3. Step 3: Cross multiply
    627,254.81x = 865,629.34 × 355,322.62
  4. Step 4: Simplify right side
    627,254.81x = 307,577,685,037.67
  5. Step 5: Solve for x
    x = 307,577,685,037.67/627,254.81
  6. Step 6: Final answer
    x = 490,355.24

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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.