Home / 858,647.80-1,287,971.70-606,705.40

Finding the Fourth Proportional to 858,647.80, 1,287,971.70 and 606,705.40

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Solution

The fourth proportional to 858,647.80, 1,287,971.70 and 606,705.40 is: 910,058.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,647.80 : 1,287,971.70 = 606,705.40 : x
  2. Step 2: Convert to fraction form
    858,647.80/1,287,971.70 = 606,705.40/x
  3. Step 3: Cross multiply
    858,647.80x = 1,287,971.70 × 606,705.40
  4. Step 4: Simplify right side
    858,647.80x = 781,419,385,437.18
  5. Step 5: Solve for x
    x = 781,419,385,437.18/858,647.80
  6. Step 6: Final answer
    x = 910,058.10

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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.