Home / 663,941.81-916,239.66-377,461.89

Finding the Fourth Proportional to 663,941.81, 916,239.66 and 377,461.89

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Solution

The fourth proportional to 663,941.81, 916,239.66 and 377,461.89 is: 520,897.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,941.81 : 916,239.66 = 377,461.89 : x
  2. Step 2: Convert to fraction form
    663,941.81/916,239.66 = 377,461.89/x
  3. Step 3: Cross multiply
    663,941.81x = 916,239.66 × 377,461.89
  4. Step 4: Simplify right side
    663,941.81x = 345,845,553,756.56
  5. Step 5: Solve for x
    x = 345,845,553,756.56/663,941.81
  6. Step 6: Final answer
    x = 520,897.39

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.