Home / 989,813.60-1,487,830.80-971,151.20

Finding the Fourth Proportional to 989,813.60, 1,487,830.80 and 971,151.20

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Solution

The fourth proportional to 989,813.60, 1,487,830.80 and 971,151.20 is: 1,459,778.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,813.60 : 1,487,830.80 = 971,151.20 : x
  2. Step 2: Convert to fraction form
    989,813.60/1,487,830.80 = 971,151.20/x
  3. Step 3: Cross multiply
    989,813.60x = 1,487,830.80 × 971,151.20
  4. Step 4: Simplify right side
    989,813.60x = 1,444,908,666,816.96
  5. Step 5: Solve for x
    x = 1,444,908,666,816.96/989,813.60
  6. Step 6: Final answer
    x = 1,459,778.56

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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.