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Finding the Fourth Proportional to 569,865.51, 786,404.70 and 315,216.50

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Solution

The fourth proportional to 569,865.51, 786,404.70 and 315,216.50 is: 434,993.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,865.51 : 786,404.70 = 315,216.50 : x
  2. Step 2: Convert to fraction form
    569,865.51/786,404.70 = 315,216.50/x
  3. Step 3: Cross multiply
    569,865.51x = 786,404.70 × 315,216.50
  4. Step 4: Simplify right side
    569,865.51x = 247,887,733,185.53
  5. Step 5: Solve for x
    x = 247,887,733,185.53/569,865.51
  6. Step 6: Final answer
    x = 434,993.40

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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.