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Finding the Fourth Proportional to 570,493.76, 787,281.38 and 315,861.34

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Solution

The fourth proportional to 570,493.76, 787,281.38 and 315,861.34 is: 435,888.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,493.76 : 787,281.38 = 315,861.34 : x
  2. Step 2: Convert to fraction form
    570,493.76/787,281.38 = 315,861.34/x
  3. Step 3: Cross multiply
    570,493.76x = 787,281.38 × 315,861.34
  4. Step 4: Simplify right side
    570,493.76x = 248,671,751,643.85
  5. Step 5: Solve for x
    x = 248,671,751,643.85/570,493.76
  6. Step 6: Final answer
    x = 435,888.64

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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.