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Finding the Fourth Proportional to 913,521, 1,370,412.18 and 282,483.48

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Solution

The fourth proportional to 913,521, 1,370,412.18 and 282,483.48 is: 423,765.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,521 : 1,370,412.18 = 282,483.48 : x
  2. Step 2: Convert to fraction form
    913,521/1,370,412.18 = 282,483.48/x
  3. Step 3: Cross multiply
    913,521x = 1,370,412.18 × 282,483.48
  4. Step 4: Simplify right side
    913,521x = 387,118,801,640.79
  5. Step 5: Solve for x
    x = 387,118,801,640.79/913,521
  6. Step 6: Final answer
    x = 423,765.63

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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.