Home / 1,048,638.30-1,569,343.23-643,561.62

Finding the Fourth Proportional to 1,048,638.30, 1,569,343.23 and 643,561.62

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Solution

The fourth proportional to 1,048,638.30, 1,569,343.23 and 643,561.62 is: 963,124.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,048,638.30 : 1,569,343.23 = 643,561.62 : x
  2. Step 2: Convert to fraction form
    1,048,638.30/1,569,343.23 = 643,561.62/x
  3. Step 3: Cross multiply
    1,048,638.30x = 1,569,343.23 × 643,561.62
  4. Step 4: Simplify right side
    1,048,638.30x = 1,009,969,071,434.83
  5. Step 5: Solve for x
    x = 1,009,969,071,434.83/1,048,638.30
  6. Step 6: Final answer
    x = 963,124.34

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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.