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Finding the Fourth Proportional to 576,999.40, 865,499.10 and 340,455.40

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Solution

The fourth proportional to 576,999.40, 865,499.10 and 340,455.40 is: 510,683.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,999.40 : 865,499.10 = 340,455.40 : x
  2. Step 2: Convert to fraction form
    576,999.40/865,499.10 = 340,455.40/x
  3. Step 3: Cross multiply
    576,999.40x = 865,499.10 × 340,455.40
  4. Step 4: Simplify right side
    576,999.40x = 294,663,842,290.14
  5. Step 5: Solve for x
    x = 294,663,842,290.14/576,999.40
  6. Step 6: Final answer
    x = 510,683.10

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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.