Home / 486,292.12-671,438.60-314,311.84

Finding the Fourth Proportional to 486,292.12, 671,438.60 and 314,311.84

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Solution

The fourth proportional to 486,292.12, 671,438.60 and 314,311.84 is: 433,980.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,292.12 : 671,438.60 = 314,311.84 : x
  2. Step 2: Convert to fraction form
    486,292.12/671,438.60 = 314,311.84/x
  3. Step 3: Cross multiply
    486,292.12x = 671,438.60 × 314,311.84
  4. Step 4: Simplify right side
    486,292.12x = 211,041,101,813.02
  5. Step 5: Solve for x
    x = 211,041,101,813.02/486,292.12
  6. Step 6: Final answer
    x = 433,980.10

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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.