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Finding the Fourth Proportional to 875,399.60, 1,312,370.40 and 370,348.40

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Solution

The fourth proportional to 875,399.60, 1,312,370.40 and 370,348.40 is: 555,214.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,399.60 : 1,312,370.40 = 370,348.40 : x
  2. Step 2: Convert to fraction form
    875,399.60/1,312,370.40 = 370,348.40/x
  3. Step 3: Cross multiply
    875,399.60x = 1,312,370.40 × 370,348.40
  4. Step 4: Simplify right side
    875,399.60x = 486,034,277,847.36
  5. Step 5: Solve for x
    x = 486,034,277,847.36/875,399.60
  6. Step 6: Final answer
    x = 555,214.19

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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.