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Finding the Fourth Proportional to 559,643.30, 839,464.95 and 403,345.70

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Solution

The fourth proportional to 559,643.30, 839,464.95 and 403,345.70 is: 605,018.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,643.30 : 839,464.95 = 403,345.70 : x
  2. Step 2: Convert to fraction form
    559,643.30/839,464.95 = 403,345.70/x
  3. Step 3: Cross multiply
    559,643.30x = 839,464.95 × 403,345.70
  4. Step 4: Simplify right side
    559,643.30x = 338,594,577,883.22
  5. Step 5: Solve for x
    x = 338,594,577,883.22/559,643.30
  6. Step 6: Final answer
    x = 605,018.55

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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.