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Finding the Fourth Proportional to 540,007.40, 810,011.10 and 421,034.60

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Solution

The fourth proportional to 540,007.40, 810,011.10 and 421,034.60 is: 631,551.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,007.40 : 810,011.10 = 421,034.60 : x
  2. Step 2: Convert to fraction form
    540,007.40/810,011.10 = 421,034.60/x
  3. Step 3: Cross multiply
    540,007.40x = 810,011.10 × 421,034.60
  4. Step 4: Simplify right side
    540,007.40x = 341,042,699,484.06
  5. Step 5: Solve for x
    x = 341,042,699,484.06/540,007.40
  6. Step 6: Final answer
    x = 631,551.90

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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.