Home / 719,874,997.20-993,422,549.88-389,842,583.76

Finding the Fourth Proportional to 719,874,997.20, 993,422,549.88 and 389,842,583.76

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Solution

The fourth proportional to 719,874,997.20, 993,422,549.88 and 389,842,583.76 is: 537,980,086.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,874,997.20 : 993,422,549.88 = 389,842,583.76 : x
  2. Step 2: Convert to fraction form
    719,874,997.20/993,422,549.88 = 389,842,583.76/x
  3. Step 3: Cross multiply
    719,874,997.20x = 993,422,549.88 × 389,842,583.76
  4. Step 4: Simplify right side
    719,874,997.20x = 387,278,413,610,666,688
  5. Step 5: Solve for x
    x = 387,278,413,610,666,688/719,874,997.20
  6. Step 6: Final answer
    x = 537,980,086.98

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.