Home / 648,191.40-972,287.10-535,998.30

Finding the Fourth Proportional to 648,191.40, 972,287.10 and 535,998.30

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Solution

The fourth proportional to 648,191.40, 972,287.10 and 535,998.30 is: 803,997.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,191.40 : 972,287.10 = 535,998.30 : x
  2. Step 2: Convert to fraction form
    648,191.40/972,287.10 = 535,998.30/x
  3. Step 3: Cross multiply
    648,191.40x = 972,287.10 × 535,998.30
  4. Step 4: Simplify right side
    648,191.40x = 521,144,232,711.93
  5. Step 5: Solve for x
    x = 521,144,232,711.93/648,191.40
  6. Step 6: Final answer
    x = 803,997.45

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