Home / 853,973.69-1,178,484.80-491,390.35

Finding the Fourth Proportional to 853,973.69, 1,178,484.80 and 491,390.35

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Solution

The fourth proportional to 853,973.69, 1,178,484.80 and 491,390.35 is: 678,119.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,973.69 : 1,178,484.80 = 491,390.35 : x
  2. Step 2: Convert to fraction form
    853,973.69/1,178,484.80 = 491,390.35/x
  3. Step 3: Cross multiply
    853,973.69x = 1,178,484.80 × 491,390.35
  4. Step 4: Simplify right side
    853,973.69x = 579,096,052,938.52
  5. Step 5: Solve for x
    x = 579,096,052,938.52/853,973.69
  6. Step 6: Final answer
    x = 678,119.32

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Double scale
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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.