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Finding the Fourth Proportional to 474,782.40, 655,505.64 and 423,707.76

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Solution

The fourth proportional to 474,782.40, 655,505.64 and 423,707.76 is: 584,989.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,782.40 : 655,505.64 = 423,707.76 : x
  2. Step 2: Convert to fraction form
    474,782.40/655,505.64 = 423,707.76/x
  3. Step 3: Cross multiply
    474,782.40x = 655,505.64 × 423,707.76
  4. Step 4: Simplify right side
    474,782.40x = 277,742,826,391.77
  5. Step 5: Solve for x
    x = 277,742,826,391.77/474,782.40
  6. Step 6: Final answer
    x = 584,989.73

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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.