Home / 638,370,894.32-956,170,590.24-391,979,625.20

Finding the Fourth Proportional to 638,370,894.32, 956,170,590.24 and 391,979,625.20

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Solution

The fourth proportional to 638,370,894.32, 956,170,590.24 and 391,979,625.20 is: 587,118,543.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,370,894.32 : 956,170,590.24 = 391,979,625.20 : x
  2. Step 2: Convert to fraction form
    638,370,894.32/956,170,590.24 = 391,979,625.20/x
  3. Step 3: Cross multiply
    638,370,894.32x = 956,170,590.24 × 391,979,625.20
  4. Step 4: Simplify right side
    638,370,894.32x = 374,799,389,589,537,984
  5. Step 5: Solve for x
    x = 374,799,389,589,537,984/638,370,894.32
  6. Step 6: Final answer
    x = 587,118,543.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.