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Finding the Fourth Proportional to 565,626.45, 780,579.90 and 307,520.77

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Solution

The fourth proportional to 565,626.45, 780,579.90 and 307,520.77 is: 424,387.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,626.45 : 780,579.90 = 307,520.77 : x
  2. Step 2: Convert to fraction form
    565,626.45/780,579.90 = 307,520.77/x
  3. Step 3: Cross multiply
    565,626.45x = 780,579.90 × 307,520.77
  4. Step 4: Simplify right side
    565,626.45x = 240,044,531,894.52
  5. Step 5: Solve for x
    x = 240,044,531,894.52/565,626.45
  6. Step 6: Final answer
    x = 424,387.03

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1.5x scale

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.