Home / 690,380.16-1,035,688.32-316,435.20

Finding the Fourth Proportional to 690,380.16, 1,035,688.32 and 316,435.20

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Solution

The fourth proportional to 690,380.16, 1,035,688.32 and 316,435.20 is: 474,706.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,380.16 : 1,035,688.32 = 316,435.20 : x
  2. Step 2: Convert to fraction form
    690,380.16/1,035,688.32 = 316,435.20/x
  3. Step 3: Cross multiply
    690,380.16x = 1,035,688.32 × 316,435.20
  4. Step 4: Simplify right side
    690,380.16x = 327,728,240,676.86
  5. Step 5: Solve for x
    x = 327,728,240,676.86/690,380.16
  6. Step 6: Final answer
    x = 474,706.92

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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.