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Finding the Fourth Proportional to 559,539.98, 772,141.03 and 317,821.81

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Solution

The fourth proportional to 559,539.98, 772,141.03 and 317,821.81 is: 438,580.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,539.98 : 772,141.03 = 317,821.81 : x
  2. Step 2: Convert to fraction form
    559,539.98/772,141.03 = 317,821.81/x
  3. Step 3: Cross multiply
    559,539.98x = 772,141.03 × 317,821.81
  4. Step 4: Simplify right side
    559,539.98x = 245,403,259,729.86
  5. Step 5: Solve for x
    x = 245,403,259,729.86/559,539.98
  6. Step 6: Final answer
    x = 438,580.38

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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.