Home / 1,388,895.65-2,083,543.09-429,426.05

Finding the Fourth Proportional to 1,388,895.65, 2,083,543.09 and 429,426.05

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Solution

The fourth proportional to 1,388,895.65, 2,083,543.09 and 429,426.05 is: 644,200.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,895.65 : 2,083,543.09 = 429,426.05 : x
  2. Step 2: Convert to fraction form
    1,388,895.65/2,083,543.09 = 429,426.05/x
  3. Step 3: Cross multiply
    1,388,895.65x = 2,083,543.09 × 429,426.05
  4. Step 4: Simplify right side
    1,388,895.65x = 894,727,666,578.65
  5. Step 5: Solve for x
    x = 894,727,666,578.65/1,388,895.65
  6. Step 6: Final answer
    x = 644,200.78

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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.