Home / 1,065,916.80-1,596,801.60-643,939.20

Finding the Fourth Proportional to 1,065,916.80, 1,596,801.60 and 643,939.20

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Solution

The fourth proportional to 1,065,916.80, 1,596,801.60 and 643,939.20 is: 964,656.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,065,916.80 : 1,596,801.60 = 643,939.20 : x
  2. Step 2: Convert to fraction form
    1,065,916.80/1,596,801.60 = 643,939.20/x
  3. Step 3: Cross multiply
    1,065,916.80x = 1,596,801.60 × 643,939.20
  4. Step 4: Simplify right side
    1,065,916.80x = 1,028,243,144,862.72
  5. Step 5: Solve for x
    x = 1,028,243,144,862.72/1,065,916.80
  6. Step 6: Final answer
    x = 964,656.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.