Home / 512,423,276.80-768,634,915.20-487,341,011.20

Finding the Fourth Proportional to 512,423,276.80, 768,634,915.20 and 487,341,011.20

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Solution

The fourth proportional to 512,423,276.80, 768,634,915.20 and 487,341,011.20 is: 731,011,516.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,423,276.80 : 768,634,915.20 = 487,341,011.20 : x
  2. Step 2: Convert to fraction form
    512,423,276.80/768,634,915.20 = 487,341,011.20/x
  3. Step 3: Cross multiply
    512,423,276.80x = 768,634,915.20 × 487,341,011.20
  4. Step 4: Simplify right side
    512,423,276.80x = 374,587,316,817,194,240
  5. Step 5: Solve for x
    x = 374,587,316,817,194,240/512,423,276.80
  6. Step 6: Final answer
    x = 731,011,516.80

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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.