Home / 716,968.72-989,434.20-394,689.16

Finding the Fourth Proportional to 716,968.72, 989,434.20 and 394,689.16

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Solution

The fourth proportional to 716,968.72, 989,434.20 and 394,689.16 is: 544,680.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,968.72 : 989,434.20 = 394,689.16 : x
  2. Step 2: Convert to fraction form
    716,968.72/989,434.20 = 394,689.16/x
  3. Step 3: Cross multiply
    716,968.72x = 989,434.20 × 394,689.16
  4. Step 4: Simplify right side
    716,968.72x = 390,518,953,273.27
  5. Step 5: Solve for x
    x = 390,518,953,273.27/716,968.72
  6. Step 6: Final answer
    x = 544,680.60

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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.