Home / 1,021,657.80-1,532,486.70-643,744.20

Finding the Fourth Proportional to 1,021,657.80, 1,532,486.70 and 643,744.20

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Solution

The fourth proportional to 1,021,657.80, 1,532,486.70 and 643,744.20 is: 965,616.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021,657.80 : 1,532,486.70 = 643,744.20 : x
  2. Step 2: Convert to fraction form
    1,021,657.80/1,532,486.70 = 643,744.20/x
  3. Step 3: Cross multiply
    1,021,657.80x = 1,532,486.70 × 643,744.20
  4. Step 4: Simplify right side
    1,021,657.80x = 986,529,424,702.14
  5. Step 5: Solve for x
    x = 986,529,424,702.14/1,021,657.80
  6. Step 6: Final answer
    x = 965,616.30

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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.