Home / 1,019,947.20-1,529,920.80-909,722.40

Finding the Fourth Proportional to 1,019,947.20, 1,529,920.80 and 909,722.40

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Solution

The fourth proportional to 1,019,947.20, 1,529,920.80 and 909,722.40 is: 1,364,583.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,019,947.20 : 1,529,920.80 = 909,722.40 : x
  2. Step 2: Convert to fraction form
    1,019,947.20/1,529,920.80 = 909,722.40/x
  3. Step 3: Cross multiply
    1,019,947.20x = 1,529,920.80 × 909,722.40
  4. Step 4: Simplify right side
    1,019,947.20x = 1,391,803,221,985.92
  5. Step 5: Solve for x
    x = 1,391,803,221,985.92/1,019,947.20
  6. Step 6: Final answer
    x = 1,364,583.60

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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.