Home / 1,399,789.77-1,931,710.35-819,124.53

Finding the Fourth Proportional to 1,399,789.77, 1,931,710.35 and 819,124.53

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Solution

The fourth proportional to 1,399,789.77, 1,931,710.35 and 819,124.53 is: 1,130,392.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399,789.77 : 1,931,710.35 = 819,124.53 : x
  2. Step 2: Convert to fraction form
    1,399,789.77/1,931,710.35 = 819,124.53/x
  3. Step 3: Cross multiply
    1,399,789.77x = 1,931,710.35 × 819,124.53
  4. Step 4: Simplify right side
    1,399,789.77x = 1,582,311,328,444.26
  5. Step 5: Solve for x
    x = 1,582,311,328,444.26/1,399,789.77
  6. Step 6: Final answer
    x = 1,130,392.12

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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.