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Finding the Fourth Proportional to 570,331.02, 787,057.80 and 312,208.14

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Solution

The fourth proportional to 570,331.02, 787,057.80 and 312,208.14 is: 430,847.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,331.02 : 787,057.80 = 312,208.14 : x
  2. Step 2: Convert to fraction form
    570,331.02/787,057.80 = 312,208.14/x
  3. Step 3: Cross multiply
    570,331.02x = 787,057.80 × 312,208.14
  4. Step 4: Simplify right side
    570,331.02x = 245,725,851,810.49
  5. Step 5: Solve for x
    x = 245,725,851,810.49/570,331.02
  6. Step 6: Final answer
    x = 430,847.78

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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.