Home / 851,437.36-1,175,153.70-489,109.78

Finding the Fourth Proportional to 851,437.36, 1,175,153.70 and 489,109.78

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Solution

The fourth proportional to 851,437.36, 1,175,153.70 and 489,109.78 is: 675,069.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,437.36 : 1,175,153.70 = 489,109.78 : x
  2. Step 2: Convert to fraction form
    851,437.36/1,175,153.70 = 489,109.78/x
  3. Step 3: Cross multiply
    851,437.36x = 1,175,153.70 × 489,109.78
  4. Step 4: Simplify right side
    851,437.36x = 574,779,167,673.19
  5. Step 5: Solve for x
    x = 574,779,167,673.19/851,437.36
  6. Step 6: Final answer
    x = 675,069.24

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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.