Home / 1,105,328.40-1,658,867.40-431,732.40

Finding the Fourth Proportional to 1,105,328.40, 1,658,867.40 and 431,732.40

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Solution

The fourth proportional to 1,105,328.40, 1,658,867.40 and 431,732.40 is: 647,940.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,105,328.40 : 1,658,867.40 = 431,732.40 : x
  2. Step 2: Convert to fraction form
    1,105,328.40/1,658,867.40 = 431,732.40/x
  3. Step 3: Cross multiply
    1,105,328.40x = 1,658,867.40 × 431,732.40
  4. Step 4: Simplify right side
    1,105,328.40x = 716,186,803,883.76
  5. Step 5: Solve for x
    x = 716,186,803,883.76/1,105,328.40
  6. Step 6: Final answer
    x = 647,940.29

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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.