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Finding the Fourth Proportional to 642,300.17, 886,468.62 and 370,314.80

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Solution

The fourth proportional to 642,300.17, 886,468.62 and 370,314.80 is: 511,088.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,300.17 : 886,468.62 = 370,314.80 : x
  2. Step 2: Convert to fraction form
    642,300.17/886,468.62 = 370,314.80/x
  3. Step 3: Cross multiply
    642,300.17x = 886,468.62 × 370,314.80
  4. Step 4: Simplify right side
    642,300.17x = 328,272,449,721.58
  5. Step 5: Solve for x
    x = 328,272,449,721.58/642,300.17
  6. Step 6: Final answer
    x = 511,088.84

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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.