Home / 989,973.36-1,482,967.44-686,720.16

Finding the Fourth Proportional to 989,973.36, 1,482,967.44 and 686,720.16

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Solution

The fourth proportional to 989,973.36, 1,482,967.44 and 686,720.16 is: 1,028,698.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,973.36 : 1,482,967.44 = 686,720.16 : x
  2. Step 2: Convert to fraction form
    989,973.36/1,482,967.44 = 686,720.16/x
  3. Step 3: Cross multiply
    989,973.36x = 1,482,967.44 × 686,720.16
  4. Step 4: Simplify right side
    989,973.36x = 1,018,383,637,671.59
  5. Step 5: Solve for x
    x = 1,018,383,637,671.59/989,973.36
  6. Step 6: Final answer
    x = 1,028,698.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.