Home / 912,824.28-1,369,560.78-407,339.28

Finding the Fourth Proportional to 912,824.28, 1,369,560.78 and 407,339.28

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Solution

The fourth proportional to 912,824.28, 1,369,560.78 and 407,339.28 is: 611,153.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,824.28 : 1,369,560.78 = 407,339.28 : x
  2. Step 2: Convert to fraction form
    912,824.28/1,369,560.78 = 407,339.28/x
  3. Step 3: Cross multiply
    912,824.28x = 1,369,560.78 × 407,339.28
  4. Step 4: Simplify right side
    912,824.28x = 557,875,902,041.44
  5. Step 5: Solve for x
    x = 557,875,902,041.44/912,824.28
  6. Step 6: Final answer
    x = 611,153.66

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1.5x scale

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.