Home / 648,136.70-972,075.45-311,176.70

Finding the Fourth Proportional to 648,136.70, 972,075.45 and 311,176.70

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Solution

The fourth proportional to 648,136.70, 972,075.45 and 311,176.70 is: 466,702.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,136.70 : 972,075.45 = 311,176.70 : x
  2. Step 2: Convert to fraction form
    648,136.70/972,075.45 = 311,176.70/x
  3. Step 3: Cross multiply
    648,136.70x = 972,075.45 × 311,176.70
  4. Step 4: Simplify right side
    648,136.70x = 302,487,230,682.02
  5. Step 5: Solve for x
    x = 302,487,230,682.02/648,136.70
  6. Step 6: Final answer
    x = 466,702.83

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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.