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Finding the Fourth Proportional to 480,129.88, 662,648.64 and 286,545.81

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Solution

The fourth proportional to 480,129.88, 662,648.64 and 286,545.81 is: 395,474.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,129.88 : 662,648.64 = 286,545.81 : x
  2. Step 2: Convert to fraction form
    480,129.88/662,648.64 = 286,545.81/x
  3. Step 3: Cross multiply
    480,129.88x = 662,648.64 × 286,545.81
  4. Step 4: Simplify right side
    480,129.88x = 189,879,190,853.46
  5. Step 5: Solve for x
    x = 189,879,190,853.46/480,129.88
  6. Step 6: Final answer
    x = 395,474.64

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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.