Home / 919,072.05-1,378,651.28-288,006.45

Finding the Fourth Proportional to 919,072.05, 1,378,651.28 and 288,006.45

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Solution

The fourth proportional to 919,072.05, 1,378,651.28 and 288,006.45 is: 432,023.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,072.05 : 1,378,651.28 = 288,006.45 : x
  2. Step 2: Convert to fraction form
    919,072.05/1,378,651.28 = 288,006.45/x
  3. Step 3: Cross multiply
    919,072.05x = 1,378,651.28 × 288,006.45
  4. Step 4: Simplify right side
    919,072.05x = 397,060,459,500.72
  5. Step 5: Solve for x
    x = 397,060,459,500.72/919,072.05
  6. Step 6: Final answer
    x = 432,023.21

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1.5x scale

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.