Home / 716,778.02-989,160.65-394,495.55

Finding the Fourth Proportional to 716,778.02, 989,160.65 and 394,495.55

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Solution

The fourth proportional to 716,778.02, 989,160.65 and 394,495.55 is: 544,407.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,778.02 : 989,160.65 = 394,495.55 : x
  2. Step 2: Convert to fraction form
    716,778.02/989,160.65 = 394,495.55/x
  3. Step 3: Cross multiply
    716,778.02x = 989,160.65 × 394,495.55
  4. Step 4: Simplify right side
    716,778.02x = 390,219,474,660.11
  5. Step 5: Solve for x
    x = 390,219,474,660.11/716,778.02
  6. Step 6: Final answer
    x = 544,407.70

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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.