Home / 861,975.86-1,189,526.65-499,609.91

Finding the Fourth Proportional to 861,975.86, 1,189,526.65 and 499,609.91

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Solution

The fourth proportional to 861,975.86, 1,189,526.65 and 499,609.91 is: 689,461.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,975.86 : 1,189,526.65 = 499,609.91 : x
  2. Step 2: Convert to fraction form
    861,975.86/1,189,526.65 = 499,609.91/x
  3. Step 3: Cross multiply
    861,975.86x = 1,189,526.65 × 499,609.91
  4. Step 4: Simplify right side
    861,975.86x = 594,299,299,813.17
  5. Step 5: Solve for x
    x = 594,299,299,813.17/861,975.86
  6. Step 6: Final answer
    x = 689,461.65

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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.