Home / 921,221.04-1,382,020.20-388,742.16

Finding the Fourth Proportional to 921,221.04, 1,382,020.20 and 388,742.16

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Solution

The fourth proportional to 921,221.04, 1,382,020.20 and 388,742.16 is: 583,192.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,221.04 : 1,382,020.20 = 388,742.16 : x
  2. Step 2: Convert to fraction form
    921,221.04/1,382,020.20 = 388,742.16/x
  3. Step 3: Cross multiply
    921,221.04x = 1,382,020.20 × 388,742.16
  4. Step 4: Simplify right side
    921,221.04x = 537,249,517,711.63
  5. Step 5: Solve for x
    x = 537,249,517,711.63/921,221.04
  6. Step 6: Final answer
    x = 583,192.84

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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.