Home / 1,100,681.55-1,651,186.37-390,650.13

Finding the Fourth Proportional to 1,100,681.55, 1,651,186.37 and 390,650.13

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Solution

The fourth proportional to 1,100,681.55, 1,651,186.37 and 390,650.13 is: 586,033.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,100,681.55 : 1,651,186.37 = 390,650.13 : x
  2. Step 2: Convert to fraction form
    1,100,681.55/1,651,186.37 = 390,650.13/x
  3. Step 3: Cross multiply
    1,100,681.55x = 1,651,186.37 × 390,650.13
  4. Step 4: Simplify right side
    1,100,681.55x = 645,036,171,071.35
  5. Step 5: Solve for x
    x = 645,036,171,071.35/1,100,681.55
  6. Step 6: Final answer
    x = 586,033.42

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Double scale
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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.