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Finding the Fourth Proportional to 557,408.90, 836,113.35 and 520,084.10

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Solution

The fourth proportional to 557,408.90, 836,113.35 and 520,084.10 is: 780,126.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,408.90 : 836,113.35 = 520,084.10 : x
  2. Step 2: Convert to fraction form
    557,408.90/836,113.35 = 520,084.10/x
  3. Step 3: Cross multiply
    557,408.90x = 836,113.35 × 520,084.10
  4. Step 4: Simplify right side
    557,408.90x = 434,849,259,132.74
  5. Step 5: Solve for x
    x = 434,849,259,132.74/557,408.90
  6. Step 6: Final answer
    x = 780,126.15

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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.