Home / 738,348.95-1,018,921.94-398,817.20

Finding the Fourth Proportional to 738,348.95, 1,018,921.94 and 398,817.20

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Solution

The fourth proportional to 738,348.95, 1,018,921.94 and 398,817.20 is: 550,367.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,348.95 : 1,018,921.94 = 398,817.20 : x
  2. Step 2: Convert to fraction form
    738,348.95/1,018,921.94 = 398,817.20/x
  3. Step 3: Cross multiply
    738,348.95x = 1,018,921.94 × 398,817.20
  4. Step 4: Simplify right side
    738,348.95x = 406,363,588,040.67
  5. Step 5: Solve for x
    x = 406,363,588,040.67/738,348.95
  6. Step 6: Final answer
    x = 550,367.94

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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.