Home / 724,455.40-999,822.18-422,631.40

Finding the Fourth Proportional to 724,455.40, 999,822.18 and 422,631.40

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Solution

The fourth proportional to 724,455.40, 999,822.18 and 422,631.40 is: 583,274.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,455.40 : 999,822.18 = 422,631.40 : x
  2. Step 2: Convert to fraction form
    724,455.40/999,822.18 = 422,631.40/x
  3. Step 3: Cross multiply
    724,455.40x = 999,822.18 × 422,631.40
  4. Step 4: Simplify right side
    724,455.40x = 422,556,247,684.45
  5. Step 5: Solve for x
    x = 422,556,247,684.45/724,455.40
  6. Step 6: Final answer
    x = 583,274.34

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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.