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Finding the Fourth Proportional to 540,015.40, 810,023.10 and 435,039.40

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Solution

The fourth proportional to 540,015.40, 810,023.10 and 435,039.40 is: 652,559.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,015.40 : 810,023.10 = 435,039.40 : x
  2. Step 2: Convert to fraction form
    540,015.40/810,023.10 = 435,039.40/x
  3. Step 3: Cross multiply
    540,015.40x = 810,023.10 × 435,039.40
  4. Step 4: Simplify right side
    540,015.40x = 352,391,963,410.14
  5. Step 5: Solve for x
    x = 352,391,963,410.14/540,015.40
  6. Step 6: Final answer
    x = 652,559.10

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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.