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Finding the Fourth Proportional to 926,065, 1,277,969.70 and 502,129

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Solution

The fourth proportional to 926,065, 1,277,969.70 and 502,129 is: 692,938.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,065 : 1,277,969.70 = 502,129 : x
  2. Step 2: Convert to fraction form
    926,065/1,277,969.70 = 502,129/x
  3. Step 3: Cross multiply
    926,065x = 1,277,969.70 × 502,129
  4. Step 4: Simplify right side
    926,065x = 641,705,647,491.30
  5. Step 5: Solve for x
    x = 641,705,647,491.30/926,065
  6. Step 6: Final answer
    x = 692,938.02

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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.