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Finding the Fourth Proportional to 403,285.20, 604,927.80 and 383,602.20

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Solution

The fourth proportional to 403,285.20, 604,927.80 and 383,602.20 is: 575,403.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,285.20 : 604,927.80 = 383,602.20 : x
  2. Step 2: Convert to fraction form
    403,285.20/604,927.80 = 383,602.20/x
  3. Step 3: Cross multiply
    403,285.20x = 604,927.80 × 383,602.20
  4. Step 4: Simplify right side
    403,285.20x = 232,051,634,921.16
  5. Step 5: Solve for x
    x = 232,051,634,921.16/403,285.20
  6. Step 6: Final answer
    x = 575,403.30

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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.