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Finding the Fourth Proportional to 536,636.90, 804,955.35 and 387,920.90

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Solution

The fourth proportional to 536,636.90, 804,955.35 and 387,920.90 is: 581,881.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,636.90 : 804,955.35 = 387,920.90 : x
  2. Step 2: Convert to fraction form
    536,636.90/804,955.35 = 387,920.90/x
  3. Step 3: Cross multiply
    536,636.90x = 804,955.35 × 387,920.90
  4. Step 4: Simplify right side
    536,636.90x = 312,259,003,831.82
  5. Step 5: Solve for x
    x = 312,259,003,831.82/536,636.90
  6. Step 6: Final answer
    x = 581,881.35

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Similar ratio
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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.