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Finding the Fourth Proportional to 526,016.40, 788,441.40 and 289,528.80

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Solution

The fourth proportional to 526,016.40, 788,441.40 and 289,528.80 is: 433,972.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,016.40 : 788,441.40 = 289,528.80 : x
  2. Step 2: Convert to fraction form
    526,016.40/788,441.40 = 289,528.80/x
  3. Step 3: Cross multiply
    526,016.40x = 788,441.40 × 289,528.80
  4. Step 4: Simplify right side
    526,016.40x = 228,276,492,412.32
  5. Step 5: Solve for x
    x = 228,276,492,412.32/526,016.40
  6. Step 6: Final answer
    x = 433,972.20

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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.