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Finding the Fourth Proportional to 648,990.44, 971,117.34 and 382,878.44

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Solution

The fourth proportional to 648,990.44, 971,117.34 and 382,878.44 is: 572,920.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,990.44 : 971,117.34 = 382,878.44 : x
  2. Step 2: Convert to fraction form
    648,990.44/971,117.34 = 382,878.44/x
  3. Step 3: Cross multiply
    648,990.44x = 971,117.34 × 382,878.44
  4. Step 4: Simplify right side
    648,990.44x = 371,819,892,196.15
  5. Step 5: Solve for x
    x = 371,819,892,196.15/648,990.44
  6. Step 6: Final answer
    x = 572,920.45

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Double scale
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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.