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Finding the Fourth Proportional to 458,533.08, 688,518.66 and 388,375.32

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Solution

The fourth proportional to 458,533.08, 688,518.66 and 388,375.32 is: 583,172.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,533.08 : 688,518.66 = 388,375.32 : x
  2. Step 2: Convert to fraction form
    458,533.08/688,518.66 = 388,375.32/x
  3. Step 3: Cross multiply
    458,533.08x = 688,518.66 × 388,375.32
  4. Step 4: Simplify right side
    458,533.08x = 267,403,654,903.47
  5. Step 5: Solve for x
    x = 267,403,654,903.47/458,533.08
  6. Step 6: Final answer
    x = 583,172.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.