Home / 712,887.75-983,539.08-406,743.21

Finding the Fourth Proportional to 712,887.75, 983,539.08 and 406,743.21

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Solution

The fourth proportional to 712,887.75, 983,539.08 and 406,743.21 is: 561,165.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,887.75 : 983,539.08 = 406,743.21 : x
  2. Step 2: Convert to fraction form
    712,887.75/983,539.08 = 406,743.21/x
  3. Step 3: Cross multiply
    712,887.75x = 983,539.08 × 406,743.21
  4. Step 4: Simplify right side
    712,887.75x = 400,047,842,559.65
  5. Step 5: Solve for x
    x = 400,047,842,559.65/712,887.75
  6. Step 6: Final answer
    x = 561,165.26

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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.