Home / 1,382,681.40-2,074,022.10-385,409.40

Finding the Fourth Proportional to 1,382,681.40, 2,074,022.10 and 385,409.40

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Solution

The fourth proportional to 1,382,681.40, 2,074,022.10 and 385,409.40 is: 578,114.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,382,681.40 : 2,074,022.10 = 385,409.40 : x
  2. Step 2: Convert to fraction form
    1,382,681.40/2,074,022.10 = 385,409.40/x
  3. Step 3: Cross multiply
    1,382,681.40x = 2,074,022.10 × 385,409.40
  4. Step 4: Simplify right side
    1,382,681.40x = 799,347,613,147.74
  5. Step 5: Solve for x
    x = 799,347,613,147.74/1,382,681.40
  6. Step 6: Final answer
    x = 578,114.10

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Double scale
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Similar ratio
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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.