Home / 724,278.66-999,551.26-401,988.78

Finding the Fourth Proportional to 724,278.66, 999,551.26 and 401,988.78

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Solution

The fourth proportional to 724,278.66, 999,551.26 and 401,988.78 is: 554,770.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,278.66 : 999,551.26 = 401,988.78 : x
  2. Step 2: Convert to fraction form
    724,278.66/999,551.26 = 401,988.78/x
  3. Step 3: Cross multiply
    724,278.66x = 999,551.26 × 401,988.78
  4. Step 4: Simplify right side
    724,278.66x = 401,808,391,554.86
  5. Step 5: Solve for x
    x = 401,808,391,554.86/724,278.66
  6. Step 6: Final answer
    x = 554,770.44

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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.