Home / 740,020.48-1,021,228.23-400,488.72

Finding the Fourth Proportional to 740,020.48, 1,021,228.23 and 400,488.72

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Solution

The fourth proportional to 740,020.48, 1,021,228.23 and 400,488.72 is: 552,674.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,020.48 : 1,021,228.23 = 400,488.72 : x
  2. Step 2: Convert to fraction form
    740,020.48/1,021,228.23 = 400,488.72/x
  3. Step 3: Cross multiply
    740,020.48x = 1,021,228.23 × 400,488.72
  4. Step 4: Simplify right side
    740,020.48x = 408,990,386,660.57
  5. Step 5: Solve for x
    x = 408,990,386,660.57/740,020.48
  6. Step 6: Final answer
    x = 552,674.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.