Home / 1,369,856.64-1,890,299.52-766,128

Finding the Fourth Proportional to 1,369,856.64, 1,890,299.52 and 766,128

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Solution

The fourth proportional to 1,369,856.64, 1,890,299.52 and 766,128 is: 1,057,199.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,369,856.64 : 1,890,299.52 = 766,128 : x
  2. Step 2: Convert to fraction form
    1,369,856.64/1,890,299.52 = 766,128/x
  3. Step 3: Cross multiply
    1,369,856.64x = 1,890,299.52 × 766,128
  4. Step 4: Simplify right side
    1,369,856.64x = 1,448,211,390,658.56
  5. Step 5: Solve for x
    x = 1,448,211,390,658.56/1,369,856.64
  6. Step 6: Final answer
    x = 1,057,199.23

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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.