Home / 901,004.76-1,243,140.75-528,465.72

Finding the Fourth Proportional to 901,004.76, 1,243,140.75 and 528,465.72

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Solution

The fourth proportional to 901,004.76, 1,243,140.75 and 528,465.72 is: 729,138.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    901,004.76 : 1,243,140.75 = 528,465.72 : x
  2. Step 2: Convert to fraction form
    901,004.76/1,243,140.75 = 528,465.72/x
  3. Step 3: Cross multiply
    901,004.76x = 1,243,140.75 × 528,465.72
  4. Step 4: Simplify right side
    901,004.76x = 656,957,271,510.09
  5. Step 5: Solve for x
    x = 656,957,271,510.09/901,004.76
  6. Step 6: Final answer
    x = 729,138.51

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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.