Home / 738,353.15-1,018,927.38-398,821.40

Finding the Fourth Proportional to 738,353.15, 1,018,927.38 and 398,821.40

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Solution

The fourth proportional to 738,353.15, 1,018,927.38 and 398,821.40 is: 550,373.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,353.15 : 1,018,927.38 = 398,821.40 : x
  2. Step 2: Convert to fraction form
    738,353.15/1,018,927.38 = 398,821.40/x
  3. Step 3: Cross multiply
    738,353.15x = 1,018,927.38 × 398,821.40
  4. Step 4: Simplify right side
    738,353.15x = 406,370,044,189.93
  5. Step 5: Solve for x
    x = 406,370,044,189.93/738,353.15
  6. Step 6: Final answer
    x = 550,373.55

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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.