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Finding the Fourth Proportional to 810,847.20, 1,215,862.80 and 249,808.80

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Solution

The fourth proportional to 810,847.20, 1,215,862.80 and 249,808.80 is: 374,587.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,847.20 : 1,215,862.80 = 249,808.80 : x
  2. Step 2: Convert to fraction form
    810,847.20/1,215,862.80 = 249,808.80/x
  3. Step 3: Cross multiply
    810,847.20x = 1,215,862.80 × 249,808.80
  4. Step 4: Simplify right side
    810,847.20x = 303,733,227,032.64
  5. Step 5: Solve for x
    x = 303,733,227,032.64/810,847.20
  6. Step 6: Final answer
    x = 374,587.50

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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.