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Finding the Fourth Proportional to 868,750.20, 1,303,254.90 and 307,740.60

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Solution

The fourth proportional to 868,750.20, 1,303,254.90 and 307,740.60 is: 461,656.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,750.20 : 1,303,254.90 = 307,740.60 : x
  2. Step 2: Convert to fraction form
    868,750.20/1,303,254.90 = 307,740.60/x
  3. Step 3: Cross multiply
    868,750.20x = 1,303,254.90 × 307,740.60
  4. Step 4: Simplify right side
    868,750.20x = 401,064,444,878.94
  5. Step 5: Solve for x
    x = 401,064,444,878.94/868,750.20
  6. Step 6: Final answer
    x = 461,656.81

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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.