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Finding the Fourth Proportional to 611,538.66, 916,271.60 and 374,385.65

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Solution

The fourth proportional to 611,538.66, 916,271.60 and 374,385.65 is: 560,943.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,538.66 : 916,271.60 = 374,385.65 : x
  2. Step 2: Convert to fraction form
    611,538.66/916,271.60 = 374,385.65/x
  3. Step 3: Cross multiply
    611,538.66x = 916,271.60 × 374,385.65
  4. Step 4: Simplify right side
    611,538.66x = 343,038,932,089.25
  5. Step 5: Solve for x
    x = 343,038,932,089.25/611,538.66
  6. Step 6: Final answer
    x = 560,943.98

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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.