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Finding the Fourth Proportional to 707,492.71, 976,314.45 and 385,195.42

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Solution

The fourth proportional to 707,492.71, 976,314.45 and 385,195.42 is: 531,555.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,492.71 : 976,314.45 = 385,195.42 : x
  2. Step 2: Convert to fraction form
    707,492.71/976,314.45 = 385,195.42/x
  3. Step 3: Cross multiply
    707,492.71x = 976,314.45 × 385,195.42
  4. Step 4: Simplify right side
    707,492.71x = 376,071,854,619.82
  5. Step 5: Solve for x
    x = 376,071,854,619.82/707,492.71
  6. Step 6: Final answer
    x = 531,555.80

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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.