Home / 721,225,417.25-1,081,562,353.16-393,525,776.72

Finding the Fourth Proportional to 721,225,417.25, 1,081,562,353.16 and 393,525,776.72

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Solution

The fourth proportional to 721,225,417.25, 1,081,562,353.16 and 393,525,776.72 is: 590,138,193.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,225,417.25 : 1,081,562,353.16 = 393,525,776.72 : x
  2. Step 2: Convert to fraction form
    721,225,417.25/1,081,562,353.16 = 393,525,776.72/x
  3. Step 3: Cross multiply
    721,225,417.25x = 1,081,562,353.16 × 393,525,776.72
  4. Step 4: Simplify right side
    721,225,417.25x = 425,622,665,091,024,448
  5. Step 5: Solve for x
    x = 425,622,665,091,024,448/721,225,417.25
  6. Step 6: Final answer
    x = 590,138,193.85

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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.