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Finding the Fourth Proportional to 389,620.40, 584,430.60 and 363,048.35

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Solution

The fourth proportional to 389,620.40, 584,430.60 and 363,048.35 is: 544,572.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,620.40 : 584,430.60 = 363,048.35 : x
  2. Step 2: Convert to fraction form
    389,620.40/584,430.60 = 363,048.35/x
  3. Step 3: Cross multiply
    389,620.40x = 584,430.60 × 363,048.35
  4. Step 4: Simplify right side
    389,620.40x = 212,176,565,019.51
  5. Step 5: Solve for x
    x = 212,176,565,019.51/389,620.40
  6. Step 6: Final answer
    x = 544,572.53

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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.