Home / 724,809.60-1,087,214.40-425,433.60

Finding the Fourth Proportional to 724,809.60, 1,087,214.40 and 425,433.60

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Solution

The fourth proportional to 724,809.60, 1,087,214.40 and 425,433.60 is: 638,150.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,809.60 : 1,087,214.40 = 425,433.60 : x
  2. Step 2: Convert to fraction form
    724,809.60/1,087,214.40 = 425,433.60/x
  3. Step 3: Cross multiply
    724,809.60x = 1,087,214.40 × 425,433.60
  4. Step 4: Simplify right side
    724,809.60x = 462,537,536,163.84
  5. Step 5: Solve for x
    x = 462,537,536,163.84/724,809.60
  6. Step 6: Final answer
    x = 638,150.40

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Double scale
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Similar ratio
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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.