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Finding the Fourth Proportional to 707,678.40, 976,602.51 and 385,389.93

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Solution

The fourth proportional to 707,678.40, 976,602.51 and 385,389.93 is: 531,841.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,678.40 : 976,602.51 = 385,389.93 : x
  2. Step 2: Convert to fraction form
    707,678.40/976,602.51 = 385,389.93/x
  3. Step 3: Cross multiply
    707,678.40x = 976,602.51 × 385,389.93
  4. Step 4: Simplify right side
    707,678.40x = 376,372,772,966.72
  5. Step 5: Solve for x
    x = 376,372,772,966.72/707,678.40
  6. Step 6: Final answer
    x = 531,841.54

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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.