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Finding the Fourth Proportional to 426,510,064.80, 638,808,503.40 and 426,510,064.80

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Solution

The fourth proportional to 426,510,064.80, 638,808,503.40 and 426,510,064.80 is: 638,808,503.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,510,064.80 : 638,808,503.40 = 426,510,064.80 : x
  2. Step 2: Convert to fraction form
    426,510,064.80/638,808,503.40 = 426,510,064.80/x
  3. Step 3: Cross multiply
    426,510,064.80x = 638,808,503.40 × 426,510,064.80
  4. Step 4: Simplify right side
    426,510,064.80x = 272,458,256,179,925,024
  5. Step 5: Solve for x
    x = 272,458,256,179,925,024/426,510,064.80
  6. Step 6: Final answer
    x = 638,808,503.40

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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.