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Finding the Fourth Proportional to 524,087.20, 786,130.80 and 335,130.40

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Solution

The fourth proportional to 524,087.20, 786,130.80 and 335,130.40 is: 502,695.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,087.20 : 786,130.80 = 335,130.40 : x
  2. Step 2: Convert to fraction form
    524,087.20/786,130.80 = 335,130.40/x
  3. Step 3: Cross multiply
    524,087.20x = 786,130.80 × 335,130.40
  4. Step 4: Simplify right side
    524,087.20x = 263,456,329,456.32
  5. Step 5: Solve for x
    x = 263,456,329,456.32/524,087.20
  6. Step 6: Final answer
    x = 502,695.60

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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.