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Finding the Fourth Proportional to 642,448.80, 887,012.37 and 574,247.21

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Solution

The fourth proportional to 642,448.80, 887,012.37 and 574,247.21 is: 792,848.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,448.80 : 887,012.37 = 574,247.21 : x
  2. Step 2: Convert to fraction form
    642,448.80/887,012.37 = 574,247.21/x
  3. Step 3: Cross multiply
    642,448.80x = 887,012.37 × 574,247.21
  4. Step 4: Simplify right side
    642,448.80x = 509,364,374,272.93
  5. Step 5: Solve for x
    x = 509,364,374,272.93/642,448.80
  6. Step 6: Final answer
    x = 792,848.20

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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.