Home / 708,156,370.35-977,256,732.46-390,609,494.96

Finding the Fourth Proportional to 708,156,370.35, 977,256,732.46 and 390,609,494.96

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Solution

The fourth proportional to 708,156,370.35, 977,256,732.46 and 390,609,494.96 is: 539,041,622.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,156,370.35 : 977,256,732.46 = 390,609,494.96 : x
  2. Step 2: Convert to fraction form
    708,156,370.35/977,256,732.46 = 390,609,494.96/x
  3. Step 3: Cross multiply
    708,156,370.35x = 977,256,732.46 × 390,609,494.96
  4. Step 4: Simplify right side
    708,156,370.35x = 381,725,758,706,597,632
  5. Step 5: Solve for x
    x = 381,725,758,706,597,632/708,156,370.35
  6. Step 6: Final answer
    x = 539,041,622.29

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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.