Home / 917,427.45-1,266,033.81-509,513.68

Finding the Fourth Proportional to 917,427.45, 1,266,033.81 and 509,513.68

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Solution

The fourth proportional to 917,427.45, 1,266,033.81 and 509,513.68 is: 703,119.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,427.45 : 1,266,033.81 = 509,513.68 : x
  2. Step 2: Convert to fraction form
    917,427.45/1,266,033.81 = 509,513.68/x
  3. Step 3: Cross multiply
    917,427.45x = 1,266,033.81 × 509,513.68
  4. Step 4: Simplify right side
    917,427.45x = 645,061,545,537.52
  5. Step 5: Solve for x
    x = 645,061,545,537.52/917,427.45
  6. Step 6: Final answer
    x = 703,119.95

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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.