Home / 987,551.80-1,362,905.40-557,910.80

Finding the Fourth Proportional to 987,551.80, 1,362,905.40 and 557,910.80

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Solution

The fourth proportional to 987,551.80, 1,362,905.40 and 557,910.80 is: 769,964.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,551.80 : 1,362,905.40 = 557,910.80 : x
  2. Step 2: Convert to fraction form
    987,551.80/1,362,905.40 = 557,910.80/x
  3. Step 3: Cross multiply
    987,551.80x = 1,362,905.40 × 557,910.80
  4. Step 4: Simplify right side
    987,551.80x = 760,379,642,038.32
  5. Step 5: Solve for x
    x = 760,379,642,038.32/987,551.80
  6. Step 6: Final answer
    x = 769,964.31

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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.