Home / 711,981.38-1,068,147.03-213,345.38

Finding the Fourth Proportional to 711,981.38, 1,068,147.03 and 213,345.38

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Solution

The fourth proportional to 711,981.38, 1,068,147.03 and 213,345.38 is: 320,070.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,981.38 : 1,068,147.03 = 213,345.38 : x
  2. Step 2: Convert to fraction form
    711,981.38/1,068,147.03 = 213,345.38/x
  3. Step 3: Cross multiply
    711,981.38x = 1,068,147.03 × 213,345.38
  4. Step 4: Simplify right side
    711,981.38x = 227,884,228,670.49
  5. Step 5: Solve for x
    x = 227,884,228,670.49/711,981.38
  6. Step 6: Final answer
    x = 320,070.49

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Double scale
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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.