Home / 885,100.21-1,221,436.49-497,915.90

Finding the Fourth Proportional to 885,100.21, 1,221,436.49 and 497,915.90

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Solution

The fourth proportional to 885,100.21, 1,221,436.49 and 497,915.90 is: 687,122.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,100.21 : 1,221,436.49 = 497,915.90 : x
  2. Step 2: Convert to fraction form
    885,100.21/1,221,436.49 = 497,915.90/x
  3. Step 3: Cross multiply
    885,100.21x = 1,221,436.49 × 497,915.90
  4. Step 4: Simplify right side
    885,100.21x = 608,172,649,211.19
  5. Step 5: Solve for x
    x = 608,172,649,211.19/885,100.21
  6. Step 6: Final answer
    x = 687,122.93

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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.