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Finding the Fourth Proportional to 976,907.60, 1,463,417.40 and 860,008.40

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Solution

The fourth proportional to 976,907.60, 1,463,417.40 and 860,008.40 is: 1,288,301.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    976,907.60 : 1,463,417.40 = 860,008.40 : x
  2. Step 2: Convert to fraction form
    976,907.60/1,463,417.40 = 860,008.40/x
  3. Step 3: Cross multiply
    976,907.60x = 1,463,417.40 × 860,008.40
  4. Step 4: Simplify right side
    976,907.60x = 1,258,551,256,706.16
  5. Step 5: Solve for x
    x = 1,258,551,256,706.16/976,907.60
  6. Step 6: Final answer
    x = 1,288,301.22

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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.