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Finding the Fourth Proportional to 559,877,140.80, 839,815,711.20 and 512,260,027.20

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Solution

The fourth proportional to 559,877,140.80, 839,815,711.20 and 512,260,027.20 is: 768,390,040.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,877,140.80 : 839,815,711.20 = 512,260,027.20 : x
  2. Step 2: Convert to fraction form
    559,877,140.80/839,815,711.20 = 512,260,027.20/x
  3. Step 3: Cross multiply
    559,877,140.80x = 839,815,711.20 × 512,260,027.20
  4. Step 4: Simplify right side
    559,877,140.80x = 430,204,019,062,299,328
  5. Step 5: Solve for x
    x = 430,204,019,062,299,328/559,877,140.80
  6. Step 6: Final answer
    x = 768,390,040.80

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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.