Home / 724,298.87-999,525.21-402,000.68

Finding the Fourth Proportional to 724,298.87, 999,525.21 and 402,000.68

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Solution

The fourth proportional to 724,298.87, 999,525.21 and 402,000.68 is: 554,756.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,298.87 : 999,525.21 = 402,000.68 : x
  2. Step 2: Convert to fraction form
    724,298.87/999,525.21 = 402,000.68/x
  3. Step 3: Cross multiply
    724,298.87x = 999,525.21 × 402,000.68
  4. Step 4: Simplify right side
    724,298.87x = 401,809,809,099.52
  5. Step 5: Solve for x
    x = 401,809,809,099.52/724,298.87
  6. Step 6: Final answer
    x = 554,756.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.