Home / 989,880.60-1,487,931.30-971,218.20

Finding the Fourth Proportional to 989,880.60, 1,487,931.30 and 971,218.20

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Solution

The fourth proportional to 989,880.60, 1,487,931.30 and 971,218.20 is: 1,459,879.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,880.60 : 1,487,931.30 = 971,218.20 : x
  2. Step 2: Convert to fraction form
    989,880.60/1,487,931.30 = 971,218.20/x
  3. Step 3: Cross multiply
    989,880.60x = 1,487,931.30 × 971,218.20
  4. Step 4: Simplify right side
    989,880.60x = 1,445,105,958,909.66
  5. Step 5: Solve for x
    x = 1,445,105,958,909.66/989,880.60
  6. Step 6: Final answer
    x = 1,459,879.06

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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.