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Finding the Fourth Proportional to 545,627.72, 752,966.39 and 316,317.92

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Solution

The fourth proportional to 545,627.72, 752,966.39 and 316,317.92 is: 436,518.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,627.72 : 752,966.39 = 316,317.92 : x
  2. Step 2: Convert to fraction form
    545,627.72/752,966.39 = 316,317.92/x
  3. Step 3: Cross multiply
    545,627.72x = 752,966.39 × 316,317.92
  4. Step 4: Simplify right side
    545,627.72x = 238,176,759,340.67
  5. Step 5: Solve for x
    x = 238,176,759,340.67/545,627.72
  6. Step 6: Final answer
    x = 436,518.80

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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.