Home / 1,443,909.61-1,991,969.77-870,631.30

Finding the Fourth Proportional to 1,443,909.61, 1,991,969.77 and 870,631.30

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Solution

The fourth proportional to 1,443,909.61, 1,991,969.77 and 870,631.30 is: 1,201,094.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,443,909.61 : 1,991,969.77 = 870,631.30 : x
  2. Step 2: Convert to fraction form
    1,443,909.61/1,991,969.77 = 870,631.30/x
  3. Step 3: Cross multiply
    1,443,909.61x = 1,991,969.77 × 870,631.30
  4. Step 4: Simplify right side
    1,443,909.61x = 1,734,271,230,415.80
  5. Step 5: Solve for x
    x = 1,734,271,230,415.80/1,443,909.61
  6. Step 6: Final answer
    x = 1,201,094.04

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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.