Home / 989,407.31-1,365,405.21-553,813.82

Finding the Fourth Proportional to 989,407.31, 1,365,405.21 and 553,813.82

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Solution

The fourth proportional to 989,407.31, 1,365,405.21 and 553,813.82 is: 764,276.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,407.31 : 1,365,405.21 = 553,813.82 : x
  2. Step 2: Convert to fraction form
    989,407.31/1,365,405.21 = 553,813.82/x
  3. Step 3: Cross multiply
    989,407.31x = 1,365,405.21 × 553,813.82
  4. Step 4: Simplify right side
    989,407.31x = 756,180,273,491.25
  5. Step 5: Solve for x
    x = 756,180,273,491.25/989,407.31
  6. Step 6: Final answer
    x = 764,276.01

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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.