Home / 849,374.64-1,172,185.38-486,858.78

Finding the Fourth Proportional to 849,374.64, 1,172,185.38 and 486,858.78

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Solution

The fourth proportional to 849,374.64, 1,172,185.38 and 486,858.78 is: 671,892.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    849,374.64 : 1,172,185.38 = 486,858.78 : x
  2. Step 2: Convert to fraction form
    849,374.64/1,172,185.38 = 486,858.78/x
  3. Step 3: Cross multiply
    849,374.64x = 1,172,185.38 × 486,858.78
  4. Step 4: Simplify right side
    849,374.64x = 570,688,744,040.64
  5. Step 5: Solve for x
    x = 570,688,744,040.64/849,374.64
  6. Step 6: Final answer
    x = 671,892.85

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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.