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Finding the Fourth Proportional to 318,920,804,965.10, 478,381,207,447.65 and 318,920,804,965.10

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Solution

The fourth proportional to 318,920,804,965.10, 478,381,207,447.65 and 318,920,804,965.10 is: 478,381,207,447.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,920,804,965.10 : 478,381,207,447.65 = 318,920,804,965.10 : x
  2. Step 2: Convert to fraction form
    318,920,804,965.10/478,381,207,447.65 = 318,920,804,965.10/x
  3. Step 3: Cross multiply
    318,920,804,965.10x = 478,381,207,447.65 × 318,920,804,965.10
  4. Step 4: Simplify right side
    318,920,804,965.10x = 152,565,719,759,381,017,395,200
  5. Step 5: Solve for x
    x = 152,565,719,759,381,017,395,200/318,920,804,965.10
  6. Step 6: Final answer
    x = 478,381,207,447.65

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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.