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Finding the Fourth Proportional to 707,751, 976,681.80 and 385,466.76

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Solution

The fourth proportional to 707,751, 976,681.80 and 385,466.76 is: 531,936.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,751 : 976,681.80 = 385,466.76 : x
  2. Step 2: Convert to fraction form
    707,751/976,681.80 = 385,466.76/x
  3. Step 3: Cross multiply
    707,751x = 976,681.80 × 385,466.76
  4. Step 4: Simplify right side
    707,751x = 376,478,368,996.97
  5. Step 5: Solve for x
    x = 376,478,368,996.97/707,751
  6. Step 6: Final answer
    x = 531,936.19

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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.