Home / 1,020,143.70-1,530,215.55-909,918.90

Finding the Fourth Proportional to 1,020,143.70, 1,530,215.55 and 909,918.90

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Solution

The fourth proportional to 1,020,143.70, 1,530,215.55 and 909,918.90 is: 1,364,878.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,143.70 : 1,530,215.55 = 909,918.90 : x
  2. Step 2: Convert to fraction form
    1,020,143.70/1,530,215.55 = 909,918.90/x
  3. Step 3: Cross multiply
    1,020,143.70x = 1,530,215.55 × 909,918.90
  4. Step 4: Simplify right side
    1,020,143.70x = 1,392,372,050,018.90
  5. Step 5: Solve for x
    x = 1,392,372,050,018.90/1,020,143.70
  6. Step 6: Final answer
    x = 1,364,878.35

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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.