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Finding the Fourth Proportional to 707,340.74, 976,130.28 and 385,053.21

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Solution

The fourth proportional to 707,340.74, 976,130.28 and 385,053.21 is: 531,373.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,340.74 : 976,130.28 = 385,053.21 : x
  2. Step 2: Convert to fraction form
    707,340.74/976,130.28 = 385,053.21/x
  3. Step 3: Cross multiply
    707,340.74x = 976,130.28 × 385,053.21
  4. Step 4: Simplify right side
    707,340.74x = 375,862,097,692.20
  5. Step 5: Solve for x
    x = 375,862,097,692.20/707,340.74
  6. Step 6: Final answer
    x = 531,373.47

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Similar ratio
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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.