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Finding the Fourth Proportional to 554,510.32, 765,221.43 and 299,860.90

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Solution

The fourth proportional to 554,510.32, 765,221.43 and 299,860.90 is: 413,806.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,510.32 : 765,221.43 = 299,860.90 : x
  2. Step 2: Convert to fraction form
    554,510.32/765,221.43 = 299,860.90/x
  3. Step 3: Cross multiply
    554,510.32x = 765,221.43 × 299,860.90
  4. Step 4: Simplify right side
    554,510.32x = 229,459,986,699.09
  5. Step 5: Solve for x
    x = 229,459,986,699.09/554,510.32
  6. Step 6: Final answer
    x = 413,806.52

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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.