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Finding the Fourth Proportional to 403,326.40, 604,989.60 and 359,780.80

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Solution

The fourth proportional to 403,326.40, 604,989.60 and 359,780.80 is: 539,671.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,326.40 : 604,989.60 = 359,780.80 : x
  2. Step 2: Convert to fraction form
    403,326.40/604,989.60 = 359,780.80/x
  3. Step 3: Cross multiply
    403,326.40x = 604,989.60 × 359,780.80
  4. Step 4: Simplify right side
    403,326.40x = 217,663,642,279.68
  5. Step 5: Solve for x
    x = 217,663,642,279.68/403,326.40
  6. Step 6: Final answer
    x = 539,671.20

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1.5x scale

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.