Home / 650,968.52-898,128.97-421,701.55

Finding the Fourth Proportional to 650,968.52, 898,128.97 and 421,701.55

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Solution

The fourth proportional to 650,968.52, 898,128.97 and 421,701.55 is: 581,813.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    650,968.52 : 898,128.97 = 421,701.55 : x
  2. Step 2: Convert to fraction form
    650,968.52/898,128.97 = 421,701.55/x
  3. Step 3: Cross multiply
    650,968.52x = 898,128.97 × 421,701.55
  4. Step 4: Simplify right side
    650,968.52x = 378,742,382,060.81
  5. Step 5: Solve for x
    x = 378,742,382,060.81/650,968.52
  6. Step 6: Final answer
    x = 581,813.66

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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.