Home / 860,145.34-1,187,041.08-478,178.50

Finding the Fourth Proportional to 860,145.34, 1,187,041.08 and 478,178.50

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Solution

The fourth proportional to 860,145.34, 1,187,041.08 and 478,178.50 is: 659,908.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,145.34 : 1,187,041.08 = 478,178.50 : x
  2. Step 2: Convert to fraction form
    860,145.34/1,187,041.08 = 478,178.50/x
  3. Step 3: Cross multiply
    860,145.34x = 1,187,041.08 × 478,178.50
  4. Step 4: Simplify right side
    860,145.34x = 567,617,523,072.78
  5. Step 5: Solve for x
    x = 567,617,523,072.78/860,145.34
  6. Step 6: Final answer
    x = 659,908.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.