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Finding the Fourth Proportional to 898,476,507.78, 1,239,961,741.50 and 496,581,610.80

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Solution

The fourth proportional to 898,476,507.78, 1,239,961,741.50 and 496,581,610.80 is: 685,318,084.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,476,507.78 : 1,239,961,741.50 = 496,581,610.80 : x
  2. Step 2: Convert to fraction form
    898,476,507.78/1,239,961,741.50 = 496,581,610.80/x
  3. Step 3: Cross multiply
    898,476,507.78x = 1,239,961,741.50 × 496,581,610.80
  4. Step 4: Simplify right side
    898,476,507.78x = 615,742,198,924,443,264
  5. Step 5: Solve for x
    x = 615,742,198,924,443,264/898,476,507.78
  6. Step 6: Final answer
    x = 685,318,084.10

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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.