Home / 725,420.40-1,087,741.80-304,220.40

Finding the Fourth Proportional to 725,420.40, 1,087,741.80 and 304,220.40

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Solution

The fourth proportional to 725,420.40, 1,087,741.80 and 304,220.40 is: 456,167.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,420.40 : 1,087,741.80 = 304,220.40 : x
  2. Step 2: Convert to fraction form
    725,420.40/1,087,741.80 = 304,220.40/x
  3. Step 3: Cross multiply
    725,420.40x = 1,087,741.80 × 304,220.40
  4. Step 4: Simplify right side
    725,420.40x = 330,913,245,492.72
  5. Step 5: Solve for x
    x = 330,913,245,492.72/725,420.40
  6. Step 6: Final answer
    x = 456,167.55

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1.5x scale

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.