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Finding the Fourth Proportional to 570,624.45, 787,485.48 and 315,975.63

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Solution

The fourth proportional to 570,624.45, 787,485.48 and 315,975.63 is: 436,059.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,624.45 : 787,485.48 = 315,975.63 : x
  2. Step 2: Convert to fraction form
    570,624.45/787,485.48 = 315,975.63/x
  3. Step 3: Cross multiply
    570,624.45x = 787,485.48 × 315,975.63
  4. Step 4: Simplify right side
    570,624.45x = 248,826,220,658.85
  5. Step 5: Solve for x
    x = 248,826,220,658.85/570,624.45
  6. Step 6: Final answer
    x = 436,059.51

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Double scale
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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.