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Finding the Fourth Proportional to 402,455.70, 603,683.55 and 360,465.30

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Solution

The fourth proportional to 402,455.70, 603,683.55 and 360,465.30 is: 540,697.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,455.70 : 603,683.55 = 360,465.30 : x
  2. Step 2: Convert to fraction form
    402,455.70/603,683.55 = 360,465.30/x
  3. Step 3: Cross multiply
    402,455.70x = 603,683.55 × 360,465.30
  4. Step 4: Simplify right side
    402,455.70x = 217,606,971,955.82
  5. Step 5: Solve for x
    x = 217,606,971,955.82/402,455.70
  6. Step 6: Final answer
    x = 540,697.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.