Home / 648,187.40-972,281.10-204,955.40

Finding the Fourth Proportional to 648,187.40, 972,281.10 and 204,955.40

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Solution

The fourth proportional to 648,187.40, 972,281.10 and 204,955.40 is: 307,433.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,187.40 : 972,281.10 = 204,955.40 : x
  2. Step 2: Convert to fraction form
    648,187.40/972,281.10 = 204,955.40/x
  3. Step 3: Cross multiply
    648,187.40x = 972,281.10 × 204,955.40
  4. Step 4: Simplify right side
    648,187.40x = 199,274,261,762.94
  5. Step 5: Solve for x
    x = 199,274,261,762.94/648,187.40
  6. Step 6: Final answer
    x = 307,433.10

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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.