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Finding the Fourth Proportional to 867,068.55, 1,300,488.01 and 393,645.02

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Solution

The fourth proportional to 867,068.55, 1,300,488.01 and 393,645.02 is: 590,415.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,068.55 : 1,300,488.01 = 393,645.02 : x
  2. Step 2: Convert to fraction form
    867,068.55/1,300,488.01 = 393,645.02/x
  3. Step 3: Cross multiply
    867,068.55x = 1,300,488.01 × 393,645.02
  4. Step 4: Simplify right side
    867,068.55x = 511,930,621,219.66
  5. Step 5: Solve for x
    x = 511,930,621,219.66/867,068.55
  6. Step 6: Final answer
    x = 590,415.40

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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.