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Finding the Fourth Proportional to 550,514.71, 759,708.76 and 305,536.46

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Solution

The fourth proportional to 550,514.71, 759,708.76 and 305,536.46 is: 421,639.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,514.71 : 759,708.76 = 305,536.46 : x
  2. Step 2: Convert to fraction form
    550,514.71/759,708.76 = 305,536.46/x
  3. Step 3: Cross multiply
    550,514.71x = 759,708.76 × 305,536.46
  4. Step 4: Simplify right side
    550,514.71x = 232,118,721,744.77
  5. Step 5: Solve for x
    x = 232,118,721,744.77/550,514.71
  6. Step 6: Final answer
    x = 421,639.45

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1.5x scale

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.