Home / 938,006.80-1,407,666.30-405,909.70

Finding the Fourth Proportional to 938,006.80, 1,407,666.30 and 405,909.70

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Solution

The fourth proportional to 938,006.80, 1,407,666.30 and 405,909.70 is: 609,148.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    938,006.80 : 1,407,666.30 = 405,909.70 : x
  2. Step 2: Convert to fraction form
    938,006.80/1,407,666.30 = 405,909.70/x
  3. Step 3: Cross multiply
    938,006.80x = 1,407,666.30 × 405,909.70
  4. Step 4: Simplify right side
    938,006.80x = 571,385,405,533.11
  5. Step 5: Solve for x
    x = 571,385,405,533.11/938,006.80
  6. Step 6: Final answer
    x = 609,148.47

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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.