Home / 803,981,049.40-1,205,971,574.10-319,306,857.40

Finding the Fourth Proportional to 803,981,049.40, 1,205,971,574.10 and 319,306,857.40

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Solution

The fourth proportional to 803,981,049.40, 1,205,971,574.10 and 319,306,857.40 is: 478,960,286.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    803,981,049.40 : 1,205,971,574.10 = 319,306,857.40 : x
  2. Step 2: Convert to fraction form
    803,981,049.40/1,205,971,574.10 = 319,306,857.40/x
  3. Step 3: Cross multiply
    803,981,049.40x = 1,205,971,574.10 × 319,306,857.40
  4. Step 4: Simplify right side
    803,981,049.40x = 385,074,993,439,602,176
  5. Step 5: Solve for x
    x = 385,074,993,439,602,176/803,981,049.40
  6. Step 6: Final answer
    x = 478,960,286.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.