Home / 738,166.91-1,018,670.40-398,635.16

Finding the Fourth Proportional to 738,166.91, 1,018,670.40 and 398,635.16

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Solution

The fourth proportional to 738,166.91, 1,018,670.40 and 398,635.16 is: 550,116.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,166.91 : 1,018,670.40 = 398,635.16 : x
  2. Step 2: Convert to fraction form
    738,166.91/1,018,670.40 = 398,635.16/x
  3. Step 3: Cross multiply
    738,166.91x = 1,018,670.40 × 398,635.16
  4. Step 4: Simplify right side
    738,166.91x = 406,077,832,797.91
  5. Step 5: Solve for x
    x = 406,077,832,797.91/738,166.91
  6. Step 6: Final answer
    x = 550,116.55

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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.