Home / 1,216,512.81-1,678,715.55-672,605.91

Finding the Fourth Proportional to 1,216,512.81, 1,678,715.55 and 672,605.91

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Solution

The fourth proportional to 1,216,512.81, 1,678,715.55 and 672,605.91 is: 928,156.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,512.81 : 1,678,715.55 = 672,605.91 : x
  2. Step 2: Convert to fraction form
    1,216,512.81/1,678,715.55 = 672,605.91/x
  3. Step 3: Cross multiply
    1,216,512.81x = 1,678,715.55 × 672,605.91
  4. Step 4: Simplify right side
    1,216,512.81x = 1,129,114,000,138.90
  5. Step 5: Solve for x
    x = 1,129,114,000,138.90/1,216,512.81
  6. Step 6: Final answer
    x = 928,156.28

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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.