Home / 628,479.42-867,319.85-342,017.98

Finding the Fourth Proportional to 628,479.42, 867,319.85 and 342,017.98

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Solution

The fourth proportional to 628,479.42, 867,319.85 and 342,017.98 is: 471,994.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,479.42 : 867,319.85 = 342,017.98 : x
  2. Step 2: Convert to fraction form
    628,479.42/867,319.85 = 342,017.98/x
  3. Step 3: Cross multiply
    628,479.42x = 867,319.85 × 342,017.98
  4. Step 4: Simplify right side
    628,479.42x = 296,638,983,110.90
  5. Step 5: Solve for x
    x = 296,638,983,110.90/628,479.42
  6. Step 6: Final answer
    x = 471,994.74

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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.