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Finding the Fourth Proportional to 556,913.46, 768,408.86 and 315,196.04

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Solution

The fourth proportional to 556,913.46, 768,408.86 and 315,196.04 is: 434,895.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,913.46 : 768,408.86 = 315,196.04 : x
  2. Step 2: Convert to fraction form
    556,913.46/768,408.86 = 315,196.04/x
  3. Step 3: Cross multiply
    556,913.46x = 768,408.86 × 315,196.04
  4. Step 4: Simplify right side
    556,913.46x = 242,199,430,117.96
  5. Step 5: Solve for x
    x = 242,199,430,117.96/556,913.46
  6. Step 6: Final answer
    x = 434,895.99

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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.