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Finding the Fourth Proportional to 553,941.36, 830,319.12 and 395,690.04

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Solution

The fourth proportional to 553,941.36, 830,319.12 and 395,690.04 is: 593,111.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,941.36 : 830,319.12 = 395,690.04 : x
  2. Step 2: Convert to fraction form
    553,941.36/830,319.12 = 395,690.04/x
  3. Step 3: Cross multiply
    553,941.36x = 830,319.12 × 395,690.04
  4. Step 4: Simplify right side
    553,941.36x = 328,549,005,805.57
  5. Step 5: Solve for x
    x = 328,549,005,805.57/553,941.36
  6. Step 6: Final answer
    x = 593,111.53

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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.