Home / 865,423.69-1,194,281.75-478,228.30

Finding the Fourth Proportional to 865,423.69, 1,194,281.75 and 478,228.30

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Solution

The fourth proportional to 865,423.69, 1,194,281.75 and 478,228.30 is: 659,953.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,423.69 : 1,194,281.75 = 478,228.30 : x
  2. Step 2: Convert to fraction form
    865,423.69/1,194,281.75 = 478,228.30/x
  3. Step 3: Cross multiply
    865,423.69x = 1,194,281.75 × 478,228.30
  4. Step 4: Simplify right side
    865,423.69x = 571,139,329,233.39
  5. Step 5: Solve for x
    x = 571,139,329,233.39/865,423.69
  6. Step 6: Final answer
    x = 659,953.43

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.