Home / 480,128.53-662,369.21-289,031.20

Finding the Fourth Proportional to 480,128.53, 662,369.21 and 289,031.20

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Solution

The fourth proportional to 480,128.53, 662,369.21 and 289,031.20 is: 398,737.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,128.53 : 662,369.21 = 289,031.20 : x
  2. Step 2: Convert to fraction form
    480,128.53/662,369.21 = 289,031.20/x
  3. Step 3: Cross multiply
    480,128.53x = 662,369.21 × 289,031.20
  4. Step 4: Simplify right side
    480,128.53x = 191,445,370,943.77
  5. Step 5: Solve for x
    x = 191,445,370,943.77/480,128.53
  6. Step 6: Final answer
    x = 398,737.75

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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.