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Finding the Fourth Proportional to 617,855,415.60, 926,783,123.40 and 326,610,001.20

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Solution

The fourth proportional to 617,855,415.60, 926,783,123.40 and 326,610,001.20 is: 489,915,001.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,855,415.60 : 926,783,123.40 = 326,610,001.20 : x
  2. Step 2: Convert to fraction form
    617,855,415.60/926,783,123.40 = 326,610,001.20/x
  3. Step 3: Cross multiply
    617,855,415.60x = 926,783,123.40 × 326,610,001.20
  4. Step 4: Simplify right side
    617,855,415.60x = 302,696,637,045,813,760
  5. Step 5: Solve for x
    x = 302,696,637,045,813,760/617,855,415.60
  6. Step 6: Final answer
    x = 489,915,001.80

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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.