Home / 698,555.12-1,047,086.52-398,389.36

Finding the Fourth Proportional to 698,555.12, 1,047,086.52 and 398,389.36

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Solution

The fourth proportional to 698,555.12, 1,047,086.52 and 398,389.36 is: 597,158.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,555.12 : 1,047,086.52 = 398,389.36 : x
  2. Step 2: Convert to fraction form
    698,555.12/1,047,086.52 = 398,389.36/x
  3. Step 3: Cross multiply
    698,555.12x = 1,047,086.52 × 398,389.36
  4. Step 4: Simplify right side
    698,555.12x = 417,148,128,567.43
  5. Step 5: Solve for x
    x = 417,148,128,567.43/698,555.12
  6. Step 6: Final answer
    x = 597,158.50

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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.