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Finding the Fourth Proportional to 545,640.90, 752,926.84 and 316,270.13

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Solution

The fourth proportional to 545,640.90, 752,926.84 and 316,270.13 is: 436,419.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,640.90 : 752,926.84 = 316,270.13 : x
  2. Step 2: Convert to fraction form
    545,640.90/752,926.84 = 316,270.13/x
  3. Step 3: Cross multiply
    545,640.90x = 752,926.84 × 316,270.13
  4. Step 4: Simplify right side
    545,640.90x = 238,128,269,567.29
  5. Step 5: Solve for x
    x = 238,128,269,567.29/545,640.90
  6. Step 6: Final answer
    x = 436,419.40

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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.