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Finding the Fourth Proportional to 570,567.80, 787,383.56 and 315,918.98

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Solution

The fourth proportional to 570,567.80, 787,383.56 and 315,918.98 is: 435,968.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,567.80 : 787,383.56 = 315,918.98 : x
  2. Step 2: Convert to fraction form
    570,567.80/787,383.56 = 315,918.98/x
  3. Step 3: Cross multiply
    570,567.80x = 787,383.56 × 315,918.98
  4. Step 4: Simplify right side
    570,567.80x = 248,749,414,490.05
  5. Step 5: Solve for x
    x = 248,749,414,490.05/570,567.80
  6. Step 6: Final answer
    x = 435,968.20

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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.