Home / 1,311,235,266.40-1,966,952,432.40-391,039,784.80

Finding the Fourth Proportional to 1,311,235,266.40, 1,966,952,432.40 and 391,039,784.80

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Solution

The fourth proportional to 1,311,235,266.40, 1,966,952,432.40 and 391,039,784.80 is: 586,589,360.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,235,266.40 : 1,966,952,432.40 = 391,039,784.80 : x
  2. Step 2: Convert to fraction form
    1,311,235,266.40/1,966,952,432.40 = 391,039,784.80/x
  3. Step 3: Cross multiply
    1,311,235,266.40x = 1,966,952,432.40 × 391,039,784.80
  4. Step 4: Simplify right side
    1,311,235,266.40x = 769,156,655,877,532,672
  5. Step 5: Solve for x
    x = 769,156,655,877,532,672/1,311,235,266.40
  6. Step 6: Final answer
    x = 586,589,360.11

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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.