Home / 709,605.29-1,064,878.05-389,980.37

Finding the Fourth Proportional to 709,605.29, 1,064,878.05 and 389,980.37

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Solution

The fourth proportional to 709,605.29, 1,064,878.05 and 389,980.37 is: 585,228.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,605.29 : 1,064,878.05 = 389,980.37 : x
  2. Step 2: Convert to fraction form
    709,605.29/1,064,878.05 = 389,980.37/x
  3. Step 3: Cross multiply
    709,605.29x = 1,064,878.05 × 389,980.37
  4. Step 4: Simplify right side
    709,605.29x = 415,281,533,993.98
  5. Step 5: Solve for x
    x = 415,281,533,993.98/709,605.29
  6. Step 6: Final answer
    x = 585,228.92

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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.