Home / 912,521.08-1,369,004.64-643,174.48

Finding the Fourth Proportional to 912,521.08, 1,369,004.64 and 643,174.48

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Solution

The fourth proportional to 912,521.08, 1,369,004.64 and 643,174.48 is: 964,918.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,521.08 : 1,369,004.64 = 643,174.48 : x
  2. Step 2: Convert to fraction form
    912,521.08/1,369,004.64 = 643,174.48/x
  3. Step 3: Cross multiply
    912,521.08x = 1,369,004.64 × 643,174.48
  4. Step 4: Simplify right side
    912,521.08x = 880,508,847,449.59
  5. Step 5: Solve for x
    x = 880,508,847,449.59/912,521.08
  6. Step 6: Final answer
    x = 964,918.91

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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.