Home / 391,429,772.40-587,597,999.40-210,031,244.40

Finding the Fourth Proportional to 391,429,772.40, 587,597,999.40 and 210,031,244.40

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Solution

The fourth proportional to 391,429,772.40, 587,597,999.40 and 210,031,244.40 is: 315,290,117.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,429,772.40 : 587,597,999.40 = 210,031,244.40 : x
  2. Step 2: Convert to fraction form
    391,429,772.40/587,597,999.40 = 210,031,244.40/x
  3. Step 3: Cross multiply
    391,429,772.40x = 587,597,999.40 × 210,031,244.40
  4. Step 4: Simplify right side
    391,429,772.40x = 123,413,939,020,932,448
  5. Step 5: Solve for x
    x = 123,413,939,020,932,448/391,429,772.40
  6. Step 6: Final answer
    x = 315,290,117.72

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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.