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Finding the Fourth Proportional to 868,006.30, 1,302,009.45 and 860,133.10

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Solution

The fourth proportional to 868,006.30, 1,302,009.45 and 860,133.10 is: 1,290,199.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,006.30 : 1,302,009.45 = 860,133.10 : x
  2. Step 2: Convert to fraction form
    868,006.30/1,302,009.45 = 860,133.10/x
  3. Step 3: Cross multiply
    868,006.30x = 1,302,009.45 × 860,133.10
  4. Step 4: Simplify right side
    868,006.30x = 1,119,901,424,457.80
  5. Step 5: Solve for x
    x = 1,119,901,424,457.80/868,006.30
  6. Step 6: Final answer
    x = 1,290,199.65

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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.