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Finding the Fourth Proportional to 620,596.50, 856,434.51 and 344,980.23

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Solution

The fourth proportional to 620,596.50, 856,434.51 and 344,980.23 is: 476,079.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,596.50 : 856,434.51 = 344,980.23 : x
  2. Step 2: Convert to fraction form
    620,596.50/856,434.51 = 344,980.23/x
  3. Step 3: Cross multiply
    620,596.50x = 856,434.51 × 344,980.23
  4. Step 4: Simplify right side
    620,596.50x = 295,452,974,239.74
  5. Step 5: Solve for x
    x = 295,452,974,239.74/620,596.50
  6. Step 6: Final answer
    x = 476,079.02

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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.