Home / 724,999.60-1,087,499.40-425,623.60

Finding the Fourth Proportional to 724,999.60, 1,087,499.40 and 425,623.60

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Solution

The fourth proportional to 724,999.60, 1,087,499.40 and 425,623.60 is: 638,435.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,999.60 : 1,087,499.40 = 425,623.60 : x
  2. Step 2: Convert to fraction form
    724,999.60/1,087,499.40 = 425,623.60/x
  3. Step 3: Cross multiply
    724,999.60x = 1,087,499.40 × 425,623.60
  4. Step 4: Simplify right side
    724,999.60x = 462,865,409,625.84
  5. Step 5: Solve for x
    x = 462,865,409,625.84/724,999.60
  6. Step 6: Final answer
    x = 638,435.40

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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.