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Finding the Fourth Proportional to 1,340,582.64, 1,849,862.52 and 767,569.20

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Solution

The fourth proportional to 1,340,582.64, 1,849,862.52 and 767,569.20 is: 1,059,164.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,340,582.64 : 1,849,862.52 = 767,569.20 : x
  2. Step 2: Convert to fraction form
    1,340,582.64/1,849,862.52 = 767,569.20/x
  3. Step 3: Cross multiply
    1,340,582.64x = 1,849,862.52 × 767,569.20
  4. Step 4: Simplify right side
    1,340,582.64x = 1,419,897,494,586.38
  5. Step 5: Solve for x
    x = 1,419,897,494,586.38/1,340,582.64
  6. Step 6: Final answer
    x = 1,059,164.46

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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.