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Finding the Fourth Proportional to 642,315.60, 886,235.40 and 370,466.64

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Solution

The fourth proportional to 642,315.60, 886,235.40 and 370,466.64 is: 511,151.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,315.60 : 886,235.40 = 370,466.64 : x
  2. Step 2: Convert to fraction form
    642,315.60/886,235.40 = 370,466.64/x
  3. Step 3: Cross multiply
    642,315.60x = 886,235.40 × 370,466.64
  4. Step 4: Simplify right side
    642,315.60x = 328,320,650,887.06
  5. Step 5: Solve for x
    x = 328,320,650,887.06/642,315.60
  6. Step 6: Final answer
    x = 511,151.61

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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.