Home / 938,418.10-1,406,381.46-489,018.30

Finding the Fourth Proportional to 938,418.10, 1,406,381.46 and 489,018.30

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Solution

The fourth proportional to 938,418.10, 1,406,381.46 and 489,018.30 is: 732,878.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    938,418.10 : 1,406,381.46 = 489,018.30 : x
  2. Step 2: Convert to fraction form
    938,418.10/1,406,381.46 = 489,018.30/x
  3. Step 3: Cross multiply
    938,418.10x = 1,406,381.46 × 489,018.30
  4. Step 4: Simplify right side
    938,418.10x = 687,746,270,720.72
  5. Step 5: Solve for x
    x = 687,746,270,720.72/938,418.10
  6. Step 6: Final answer
    x = 732,878.31

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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.