Home / 718,364.10-1,077,546.15-438,428.10

Finding the Fourth Proportional to 718,364.10, 1,077,546.15 and 438,428.10

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Solution

The fourth proportional to 718,364.10, 1,077,546.15 and 438,428.10 is: 657,642.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,364.10 : 1,077,546.15 = 438,428.10 : x
  2. Step 2: Convert to fraction form
    718,364.10/1,077,546.15 = 438,428.10/x
  3. Step 3: Cross multiply
    718,364.10x = 1,077,546.15 × 438,428.10
  4. Step 4: Simplify right side
    718,364.10x = 472,426,511,206.82
  5. Step 5: Solve for x
    x = 472,426,511,206.82/718,364.10
  6. Step 6: Final answer
    x = 657,642.15

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Double scale
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Similar ratio
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1.5x scale

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.