Home / 744,487.52-1,116,928.08-389,406.20

Finding the Fourth Proportional to 744,487.52, 1,116,928.08 and 389,406.20

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Solution

The fourth proportional to 744,487.52, 1,116,928.08 and 389,406.20 is: 584,212.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    744,487.52 : 1,116,928.08 = 389,406.20 : x
  2. Step 2: Convert to fraction form
    744,487.52/1,116,928.08 = 389,406.20/x
  3. Step 3: Cross multiply
    744,487.52x = 1,116,928.08 × 389,406.20
  4. Step 4: Simplify right side
    744,487.52x = 434,938,713,721.46
  5. Step 5: Solve for x
    x = 434,938,713,721.46/744,487.52
  6. Step 6: Final answer
    x = 584,212.23

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1.5x scale

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.