Home / 716,237.10-988,407.71-393,971.72

Finding the Fourth Proportional to 716,237.10, 988,407.71 and 393,971.72

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Solution

The fourth proportional to 716,237.10, 988,407.71 and 393,971.72 is: 543,681.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,237.10 : 988,407.71 = 393,971.72 : x
  2. Step 2: Convert to fraction form
    716,237.10/988,407.71 = 393,971.72/x
  3. Step 3: Cross multiply
    716,237.10x = 988,407.71 × 393,971.72
  4. Step 4: Simplify right side
    716,237.10x = 389,404,678,658.06
  5. Step 5: Solve for x
    x = 389,404,678,658.06/716,237.10
  6. Step 6: Final answer
    x = 543,681.25

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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.