Home / 875,108.40-1,310,038.20-519,939.60

Finding the Fourth Proportional to 875,108.40, 1,310,038.20 and 519,939.60

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Solution

The fourth proportional to 875,108.40, 1,310,038.20 and 519,939.60 is: 778,350.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,108.40 : 1,310,038.20 = 519,939.60 : x
  2. Step 2: Convert to fraction form
    875,108.40/1,310,038.20 = 519,939.60/x
  3. Step 3: Cross multiply
    875,108.40x = 1,310,038.20 × 519,939.60
  4. Step 4: Simplify right side
    875,108.40x = 681,140,737,692.72
  5. Step 5: Solve for x
    x = 681,140,737,692.72/875,108.40
  6. Step 6: Final answer
    x = 778,350.13

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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.