Home / 486,293.12-671,439.98-314,312.84

Finding the Fourth Proportional to 486,293.12, 671,439.98 and 314,312.84

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Solution

The fourth proportional to 486,293.12, 671,439.98 and 314,312.84 is: 433,981.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,293.12 : 671,439.98 = 314,312.84 : x
  2. Step 2: Convert to fraction form
    486,293.12/671,439.98 = 314,312.84/x
  3. Step 3: Cross multiply
    486,293.12x = 671,439.98 × 314,312.84
  4. Step 4: Simplify right side
    486,293.12x = 211,042,207,003.34
  5. Step 5: Solve for x
    x = 211,042,207,003.34/486,293.12
  6. Step 6: Final answer
    x = 433,981.48

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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.