Home / 690,362.16-1,035,661.32-316,417.20

Finding the Fourth Proportional to 690,362.16, 1,035,661.32 and 316,417.20

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Solution

The fourth proportional to 690,362.16, 1,035,661.32 and 316,417.20 is: 474,679.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,362.16 : 1,035,661.32 = 316,417.20 : x
  2. Step 2: Convert to fraction form
    690,362.16/1,035,661.32 = 316,417.20/x
  3. Step 3: Cross multiply
    690,362.16x = 1,035,661.32 × 316,417.20
  4. Step 4: Simplify right side
    690,362.16x = 327,701,055,022.70
  5. Step 5: Solve for x
    x = 327,701,055,022.70/690,362.16
  6. Step 6: Final answer
    x = 474,679.92

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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.