Home / 790,655.10-1,091,102.60-428,078.91

Finding the Fourth Proportional to 790,655.10, 1,091,102.60 and 428,078.91

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Solution

The fourth proportional to 790,655.10, 1,091,102.60 and 428,078.91 is: 590,748.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,655.10 : 1,091,102.60 = 428,078.91 : x
  2. Step 2: Convert to fraction form
    790,655.10/1,091,102.60 = 428,078.91/x
  3. Step 3: Cross multiply
    790,655.10x = 1,091,102.60 × 428,078.91
  4. Step 4: Simplify right side
    790,655.10x = 467,078,009,565.77
  5. Step 5: Solve for x
    x = 467,078,009,565.77/790,655.10
  6. Step 6: Final answer
    x = 590,748.11

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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.