Home / 489,191,935.40-732,862,048.42-289,172,391.72

Finding the Fourth Proportional to 489,191,935.40, 732,862,048.42 and 289,172,391.72

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Solution

The fourth proportional to 489,191,935.40, 732,862,048.42 and 289,172,391.72 is: 433,211,293.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,191,935.40 : 732,862,048.42 = 289,172,391.72 : x
  2. Step 2: Convert to fraction form
    489,191,935.40/732,862,048.42 = 289,172,391.72/x
  3. Step 3: Cross multiply
    489,191,935.40x = 732,862,048.42 × 289,172,391.72
  4. Step 4: Simplify right side
    489,191,935.40x = 211,923,471,342,429,856
  5. Step 5: Solve for x
    x = 211,923,471,342,429,856/489,191,935.40
  6. Step 6: Final answer
    x = 433,211,293.99

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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.