Home / 872,553.40-1,308,830.10-860,111.80

Finding the Fourth Proportional to 872,553.40, 1,308,830.10 and 860,111.80

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Solution

The fourth proportional to 872,553.40, 1,308,830.10 and 860,111.80 is: 1,290,167.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,553.40 : 1,308,830.10 = 860,111.80 : x
  2. Step 2: Convert to fraction form
    872,553.40/1,308,830.10 = 860,111.80/x
  3. Step 3: Cross multiply
    872,553.40x = 1,308,830.10 × 860,111.80
  4. Step 4: Simplify right side
    872,553.40x = 1,125,740,213,205.18
  5. Step 5: Solve for x
    x = 1,125,740,213,205.18/872,553.40
  6. Step 6: Final answer
    x = 1,290,167.70

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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.