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Finding the Fourth Proportional to 28,985,559.70, 43,478,339.55 and 8,791,806.10

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Solution

The fourth proportional to 28,985,559.70, 43,478,339.55 and 8,791,806.10 is: 13,187,709.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,985,559.70 : 43,478,339.55 = 8,791,806.10 : x
  2. Step 2: Convert to fraction form
    28,985,559.70/43,478,339.55 = 8,791,806.10/x
  3. Step 3: Cross multiply
    28,985,559.70x = 43,478,339.55 × 8,791,806.10
  4. Step 4: Simplify right side
    28,985,559.70x = 382,253,130,873,561.19
  5. Step 5: Solve for x
    x = 382,253,130,873,561.19/28,985,559.70
  6. Step 6: Final answer
    x = 13,187,709.15

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Double scale
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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.