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Finding the Fourth Proportional to 671,120.80, 926,146.08 and 369,314.88

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Solution

The fourth proportional to 671,120.80, 926,146.08 and 369,314.88 is: 509,654.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,120.80 : 926,146.08 = 369,314.88 : x
  2. Step 2: Convert to fraction form
    671,120.80/926,146.08 = 369,314.88/x
  3. Step 3: Cross multiply
    671,120.80x = 926,146.08 × 369,314.88
  4. Step 4: Simplify right side
    671,120.80x = 342,039,528,397.67
  5. Step 5: Solve for x
    x = 342,039,528,397.67/671,120.80
  6. Step 6: Final answer
    x = 509,654.19

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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.