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Finding the Fourth Proportional to 540,140.10, 810,210.15 and 440,412.90

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Solution

The fourth proportional to 540,140.10, 810,210.15 and 440,412.90 is: 660,619.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,140.10 : 810,210.15 = 440,412.90 : x
  2. Step 2: Convert to fraction form
    540,140.10/810,210.15 = 440,412.90/x
  3. Step 3: Cross multiply
    540,140.10x = 810,210.15 × 440,412.90
  4. Step 4: Simplify right side
    540,140.10x = 356,827,001,770.94
  5. Step 5: Solve for x
    x = 356,827,001,770.94/540,140.10
  6. Step 6: Final answer
    x = 660,619.35

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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.