Home / 838,152,619.89-1,257,423,459.80-285,459,836.64

Finding the Fourth Proportional to 838,152,619.89, 1,257,423,459.80 and 285,459,836.64

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Solution

The fourth proportional to 838,152,619.89, 1,257,423,459.80 and 285,459,836.64 is: 428,256,008.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,152,619.89 : 1,257,423,459.80 = 285,459,836.64 : x
  2. Step 2: Convert to fraction form
    838,152,619.89/1,257,423,459.80 = 285,459,836.64/x
  3. Step 3: Cross multiply
    838,152,619.89x = 1,257,423,459.80 × 285,459,836.64
  4. Step 4: Simplify right side
    838,152,619.89x = 358,943,895,420,384,320
  5. Step 5: Solve for x
    x = 358,943,895,420,384,320/838,152,619.89
  6. Step 6: Final answer
    x = 428,256,008.40

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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.