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Finding the Fourth Proportional to 389,403.37, 580,667.81 and 375,526.63

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Solution

The fourth proportional to 389,403.37, 580,667.81 and 375,526.63 is: 559,975.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,403.37 : 580,667.81 = 375,526.63 : x
  2. Step 2: Convert to fraction form
    389,403.37/580,667.81 = 375,526.63/x
  3. Step 3: Cross multiply
    389,403.37x = 580,667.81 × 375,526.63
  4. Step 4: Simplify right side
    389,403.37x = 218,056,225,838.78
  5. Step 5: Solve for x
    x = 218,056,225,838.78/389,403.37
  6. Step 6: Final answer
    x = 559,975.19

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1.5x scale

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.