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Finding the Fourth Proportional to 707,424.85, 976,240.42 and 385,134.28

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Solution

The fourth proportional to 707,424.85, 976,240.42 and 385,134.28 is: 531,482.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,424.85 : 976,240.42 = 385,134.28 : x
  2. Step 2: Convert to fraction form
    707,424.85/976,240.42 = 385,134.28/x
  3. Step 3: Cross multiply
    707,424.85x = 976,240.42 × 385,134.28
  4. Step 4: Simplify right side
    707,424.85x = 375,983,651,263.60
  5. Step 5: Solve for x
    x = 375,983,651,263.60/707,424.85
  6. Step 6: Final answer
    x = 531,482.11

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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.