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Finding the Fourth Proportional to 889,460.80, 1,333,730.40 and 328,206.40

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Solution

The fourth proportional to 889,460.80, 1,333,730.40 and 328,206.40 is: 492,139.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,460.80 : 1,333,730.40 = 328,206.40 : x
  2. Step 2: Convert to fraction form
    889,460.80/1,333,730.40 = 328,206.40/x
  3. Step 3: Cross multiply
    889,460.80x = 1,333,730.40 × 328,206.40
  4. Step 4: Simplify right side
    889,460.80x = 437,738,853,154.56
  5. Step 5: Solve for x
    x = 437,738,853,154.56/889,460.80
  6. Step 6: Final answer
    x = 492,139.57

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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.