Home / 989,859.60-1,487,899.80-971,197.20

Finding the Fourth Proportional to 989,859.60, 1,487,899.80 and 971,197.20

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Solution

The fourth proportional to 989,859.60, 1,487,899.80 and 971,197.20 is: 1,459,847.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,859.60 : 1,487,899.80 = 971,197.20 : x
  2. Step 2: Convert to fraction form
    989,859.60/1,487,899.80 = 971,197.20/x
  3. Step 3: Cross multiply
    989,859.60x = 1,487,899.80 × 971,197.20
  4. Step 4: Simplify right side
    989,859.60x = 1,445,044,119,640.56
  5. Step 5: Solve for x
    x = 1,445,044,119,640.56/989,859.60
  6. Step 6: Final answer
    x = 1,459,847.56

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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.