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Finding the Fourth Proportional to 570,435.48, 787,284 and 328,671.36

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Solution

The fourth proportional to 570,435.48, 787,284 and 328,671.36 is: 453,614.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,435.48 : 787,284 = 328,671.36 : x
  2. Step 2: Convert to fraction form
    570,435.48/787,284 = 328,671.36/x
  3. Step 3: Cross multiply
    570,435.48x = 787,284 × 328,671.36
  4. Step 4: Simplify right side
    570,435.48x = 258,757,702,986.24
  5. Step 5: Solve for x
    x = 258,757,702,986.24/570,435.48
  6. Step 6: Final answer
    x = 453,614.32

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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.