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Finding the Fourth Proportional to 389,004.60, 579,415.83 and 370,803

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Solution

The fourth proportional to 389,004.60, 579,415.83 and 370,803 is: 552,304.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,004.60 : 579,415.83 = 370,803 : x
  2. Step 2: Convert to fraction form
    389,004.60/579,415.83 = 370,803/x
  3. Step 3: Cross multiply
    389,004.60x = 579,415.83 × 370,803
  4. Step 4: Simplify right side
    389,004.60x = 214,849,128,011.49
  5. Step 5: Solve for x
    x = 214,849,128,011.49/389,004.60
  6. Step 6: Final answer
    x = 552,304.85

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.