Home / 989,872.10-1,487,918.55-971,209.70

Finding the Fourth Proportional to 989,872.10, 1,487,918.55 and 971,209.70

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Solution

The fourth proportional to 989,872.10, 1,487,918.55 and 971,209.70 is: 1,459,866.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,872.10 : 1,487,918.55 = 971,209.70 : x
  2. Step 2: Convert to fraction form
    989,872.10/1,487,918.55 = 971,209.70/x
  3. Step 3: Cross multiply
    989,872.10x = 1,487,918.55 × 971,209.70
  4. Step 4: Simplify right side
    989,872.10x = 1,445,080,928,569.94
  5. Step 5: Solve for x
    x = 1,445,080,928,569.94/989,872.10
  6. Step 6: Final answer
    x = 1,459,866.31

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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.