Home / 678,871.42-1,018,307.12-173,433.51

Finding the Fourth Proportional to 678,871.42, 1,018,307.12 and 173,433.51

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Solution

The fourth proportional to 678,871.42, 1,018,307.12 and 173,433.51 is: 260,150.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,871.42 : 1,018,307.12 = 173,433.51 : x
  2. Step 2: Convert to fraction form
    678,871.42/1,018,307.12 = 173,433.51/x
  3. Step 3: Cross multiply
    678,871.42x = 1,018,307.12 × 173,433.51
  4. Step 4: Simplify right side
    678,871.42x = 176,608,577,212.42
  5. Step 5: Solve for x
    x = 176,608,577,212.42/678,871.42
  6. Step 6: Final answer
    x = 260,150.26

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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.