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Finding the Fourth Proportional to 867,615.20, 1,300,808.40 and 334,930.40

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Solution

The fourth proportional to 867,615.20, 1,300,808.40 and 334,930.40 is: 502,158.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,615.20 : 1,300,808.40 = 334,930.40 : x
  2. Step 2: Convert to fraction form
    867,615.20/1,300,808.40 = 334,930.40/x
  3. Step 3: Cross multiply
    867,615.20x = 1,300,808.40 × 334,930.40
  4. Step 4: Simplify right side
    867,615.20x = 435,680,277,735.36
  5. Step 5: Solve for x
    x = 435,680,277,735.36/867,615.20
  6. Step 6: Final answer
    x = 502,158.42

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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.