Home / 864,547.20-1,296,820.74-443,554.56

Finding the Fourth Proportional to 864,547.20, 1,296,820.74 and 443,554.56

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Solution

The fourth proportional to 864,547.20, 1,296,820.74 and 443,554.56 is: 665,331.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,547.20 : 1,296,820.74 = 443,554.56 : x
  2. Step 2: Convert to fraction form
    864,547.20/1,296,820.74 = 443,554.56/x
  3. Step 3: Cross multiply
    864,547.20x = 1,296,820.74 × 443,554.56
  4. Step 4: Simplify right side
    864,547.20x = 575,210,752,729.57
  5. Step 5: Solve for x
    x = 575,210,752,729.57/864,547.20
  6. Step 6: Final answer
    x = 665,331.81

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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.