Home / 912,820.28-1,369,554.84-407,335.28

Finding the Fourth Proportional to 912,820.28, 1,369,554.84 and 407,335.28

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Solution

The fourth proportional to 912,820.28, 1,369,554.84 and 407,335.28 is: 611,147.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,820.28 : 1,369,554.84 = 407,335.28 : x
  2. Step 2: Convert to fraction form
    912,820.28/1,369,554.84 = 407,335.28/x
  3. Step 3: Cross multiply
    912,820.28x = 1,369,554.84 × 407,335.28
  4. Step 4: Simplify right side
    912,820.28x = 557,868,004,226.76
  5. Step 5: Solve for x
    x = 557,868,004,226.76/912,820.28
  6. Step 6: Final answer
    x = 611,147.69

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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.