Home / 688,072.72-1,031,568.26-434,820.56

Finding the Fourth Proportional to 688,072.72, 1,031,568.26 and 434,820.56

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Solution

The fourth proportional to 688,072.72, 1,031,568.26 and 434,820.56 is: 651,889.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,072.72 : 1,031,568.26 = 434,820.56 : x
  2. Step 2: Convert to fraction form
    688,072.72/1,031,568.26 = 434,820.56/x
  3. Step 3: Cross multiply
    688,072.72x = 1,031,568.26 × 434,820.56
  4. Step 4: Simplify right side
    688,072.72x = 448,547,088,491.43
  5. Step 5: Solve for x
    x = 448,547,088,491.43/688,072.72
  6. Step 6: Final answer
    x = 651,889.07

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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.