Home / 989,431.94-1,365,416.52-559,702.94

Finding the Fourth Proportional to 989,431.94, 1,365,416.52 and 559,702.94

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Solution

The fourth proportional to 989,431.94, 1,365,416.52 and 559,702.94 is: 772,390.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,431.94 : 1,365,416.52 = 559,702.94 : x
  2. Step 2: Convert to fraction form
    989,431.94/1,365,416.52 = 559,702.94/x
  3. Step 3: Cross multiply
    989,431.94x = 1,365,416.52 × 559,702.94
  4. Step 4: Simplify right side
    989,431.94x = 764,227,640,568.57
  5. Step 5: Solve for x
    x = 764,227,640,568.57/989,431.94
  6. Step 6: Final answer
    x = 772,390.31

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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.