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Finding the Fourth Proportional to 612,333.81, 918,519.08 and 506,543.76

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Solution

The fourth proportional to 612,333.81, 918,519.08 and 506,543.76 is: 759,830.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,333.81 : 918,519.08 = 506,543.76 : x
  2. Step 2: Convert to fraction form
    612,333.81/918,519.08 = 506,543.76/x
  3. Step 3: Cross multiply
    612,333.81x = 918,519.08 × 506,543.76
  4. Step 4: Simplify right side
    612,333.81x = 465,270,105,882.22
  5. Step 5: Solve for x
    x = 465,270,105,882.22/612,333.81
  6. Step 6: Final answer
    x = 759,830.83

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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.