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Finding the Fourth Proportional to 972,855.60, 1,458,505.80 and 411,428.40

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Solution

The fourth proportional to 972,855.60, 1,458,505.80 and 411,428.40 is: 616,813.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    972,855.60 : 1,458,505.80 = 411,428.40 : x
  2. Step 2: Convert to fraction form
    972,855.60/1,458,505.80 = 411,428.40/x
  3. Step 3: Cross multiply
    972,855.60x = 1,458,505.80 × 411,428.40
  4. Step 4: Simplify right side
    972,855.60x = 600,070,707,684.72
  5. Step 5: Solve for x
    x = 600,070,707,684.72/972,855.60
  6. Step 6: Final answer
    x = 616,813.75

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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.