Home / 688,045.05-1,031,658.76-261,612.06

Finding the Fourth Proportional to 688,045.05, 1,031,658.76 and 261,612.06

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Solution

The fourth proportional to 688,045.05, 1,031,658.76 and 261,612.06 is: 392,262.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,045.05 : 1,031,658.76 = 261,612.06 : x
  2. Step 2: Convert to fraction form
    688,045.05/1,031,658.76 = 261,612.06/x
  3. Step 3: Cross multiply
    688,045.05x = 1,031,658.76 × 261,612.06
  4. Step 4: Simplify right side
    688,045.05x = 269,894,368,916.38
  5. Step 5: Solve for x
    x = 269,894,368,916.38/688,045.05
  6. Step 6: Final answer
    x = 392,262.64

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1.5x scale

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.