Home / 871,775.10-1,308,051.45-398,216.70

Finding the Fourth Proportional to 871,775.10, 1,308,051.45 and 398,216.70

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Solution

The fourth proportional to 871,775.10, 1,308,051.45 and 398,216.70 is: 597,502.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,775.10 : 1,308,051.45 = 398,216.70 : x
  2. Step 2: Convert to fraction form
    871,775.10/1,308,051.45 = 398,216.70/x
  3. Step 3: Cross multiply
    871,775.10x = 1,308,051.45 × 398,216.70
  4. Step 4: Simplify right side
    871,775.10x = 520,887,931,849.22
  5. Step 5: Solve for x
    x = 520,887,931,849.22/871,775.10
  6. Step 6: Final answer
    x = 597,502.65

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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.