Home / 738,355.64-1,018,930.84-398,823.90

Finding the Fourth Proportional to 738,355.64, 1,018,930.84 and 398,823.90

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Solution

The fourth proportional to 738,355.64, 1,018,930.84 and 398,823.90 is: 550,377.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,355.64 : 1,018,930.84 = 398,823.90 : x
  2. Step 2: Convert to fraction form
    738,355.64/1,018,930.84 = 398,823.90/x
  3. Step 3: Cross multiply
    738,355.64x = 1,018,930.84 × 398,823.90
  4. Step 4: Simplify right side
    738,355.64x = 406,373,971,439.08
  5. Step 5: Solve for x
    x = 406,373,971,439.08/738,355.64
  6. Step 6: Final answer
    x = 550,377.01

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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.