Home / 740,850.47-1,022,378.55-401,318.72

Finding the Fourth Proportional to 740,850.47, 1,022,378.55 and 401,318.72

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Solution

The fourth proportional to 740,850.47, 1,022,378.55 and 401,318.72 is: 553,822.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,850.47 : 1,022,378.55 = 401,318.72 : x
  2. Step 2: Convert to fraction form
    740,850.47/1,022,378.55 = 401,318.72/x
  3. Step 3: Cross multiply
    740,850.47x = 1,022,378.55 × 401,318.72
  4. Step 4: Simplify right side
    740,850.47x = 410,299,651,041.46
  5. Step 5: Solve for x
    x = 410,299,651,041.46/740,850.47
  6. Step 6: Final answer
    x = 553,822.49

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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.