Home / 724,290.28-999,439.51-402,013.96

Finding the Fourth Proportional to 724,290.28, 999,439.51 and 402,013.96

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Solution

The fourth proportional to 724,290.28, 999,439.51 and 402,013.96 is: 554,734.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,290.28 : 999,439.51 = 402,013.96 : x
  2. Step 2: Convert to fraction form
    724,290.28/999,439.51 = 402,013.96/x
  3. Step 3: Cross multiply
    724,290.28x = 999,439.51 × 402,013.96
  4. Step 4: Simplify right side
    724,290.28x = 401,788,630,198.36
  5. Step 5: Solve for x
    x = 401,788,630,198.36/724,290.28
  6. Step 6: Final answer
    x = 554,734.26

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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.