Home / 786,610,636.40-1,179,750,617.40-398,068,216.40

Finding the Fourth Proportional to 786,610,636.40, 1,179,750,617.40 and 398,068,216.40

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Solution

The fourth proportional to 786,610,636.40, 1,179,750,617.40 and 398,068,216.40 is: 597,018,654.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,610,636.40 : 1,179,750,617.40 = 398,068,216.40 : x
  2. Step 2: Convert to fraction form
    786,610,636.40/1,179,750,617.40 = 398,068,216.40/x
  3. Step 3: Cross multiply
    786,610,636.40x = 1,179,750,617.40 × 398,068,216.40
  4. Step 4: Simplify right side
    786,610,636.40x = 469,621,224,065,216,832
  5. Step 5: Solve for x
    x = 469,621,224,065,216,832/786,610,636.40
  6. Step 6: Final answer
    x = 597,018,654.89

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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.