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Finding the Fourth Proportional to 558,000.34, 770,100.64 and 316,256.96

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Solution

The fourth proportional to 558,000.34, 770,100.64 and 316,256.96 is: 436,468.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,000.34 : 770,100.64 = 316,256.96 : x
  2. Step 2: Convert to fraction form
    558,000.34/770,100.64 = 316,256.96/x
  3. Step 3: Cross multiply
    558,000.34x = 770,100.64 × 316,256.96
  4. Step 4: Simplify right side
    558,000.34x = 243,549,688,435.06
  5. Step 5: Solve for x
    x = 243,549,688,435.06/558,000.34
  6. Step 6: Final answer
    x = 436,468.71

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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.