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Finding the Fourth Proportional to 978,432,403.60, 1,467,648,605.40 and 903,605,510.80

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Solution

The fourth proportional to 978,432,403.60, 1,467,648,605.40 and 903,605,510.80 is: 1,355,408,266.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,432,403.60 : 1,467,648,605.40 = 903,605,510.80 : x
  2. Step 2: Convert to fraction form
    978,432,403.60/1,467,648,605.40 = 903,605,510.80/x
  3. Step 3: Cross multiply
    978,432,403.60x = 1,467,648,605.40 × 903,605,510.80
  4. Step 4: Simplify right side
    978,432,403.60x = 1,326,175,367,757,374,720
  5. Step 5: Solve for x
    x = 1,326,175,367,757,374,720/978,432,403.60
  6. Step 6: Final answer
    x = 1,355,408,266.20

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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.