Home / 961,415.70-1,442,123.55-429,974.70

Finding the Fourth Proportional to 961,415.70, 1,442,123.55 and 429,974.70

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Solution

The fourth proportional to 961,415.70, 1,442,123.55 and 429,974.70 is: 644,962.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    961,415.70 : 1,442,123.55 = 429,974.70 : x
  2. Step 2: Convert to fraction form
    961,415.70/1,442,123.55 = 429,974.70/x
  3. Step 3: Cross multiply
    961,415.70x = 1,442,123.55 × 429,974.70
  4. Step 4: Simplify right side
    961,415.70x = 620,076,640,774.19
  5. Step 5: Solve for x
    x = 620,076,640,774.19/961,415.70
  6. Step 6: Final answer
    x = 644,962.05

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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.