Home / 765,628.74-1,056,548.98-421,461.56

Finding the Fourth Proportional to 765,628.74, 1,056,548.98 and 421,461.56

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Solution

The fourth proportional to 765,628.74, 1,056,548.98 and 421,461.56 is: 581,606.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,628.74 : 1,056,548.98 = 421,461.56 : x
  2. Step 2: Convert to fraction form
    765,628.74/1,056,548.98 = 421,461.56/x
  3. Step 3: Cross multiply
    765,628.74x = 1,056,548.98 × 421,461.56
  4. Step 4: Simplify right side
    765,628.74x = 445,294,784,495.41
  5. Step 5: Solve for x
    x = 445,294,784,495.41/765,628.74
  6. Step 6: Final answer
    x = 581,606.67

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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.