Home / 918,697.30-1,378,045.95-665,442.70

Finding the Fourth Proportional to 918,697.30, 1,378,045.95 and 665,442.70

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Solution

The fourth proportional to 918,697.30, 1,378,045.95 and 665,442.70 is: 998,164.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,697.30 : 1,378,045.95 = 665,442.70 : x
  2. Step 2: Convert to fraction form
    918,697.30/1,378,045.95 = 665,442.70/x
  3. Step 3: Cross multiply
    918,697.30x = 1,378,045.95 × 665,442.70
  4. Step 4: Simplify right side
    918,697.30x = 917,010,617,692.07
  5. Step 5: Solve for x
    x = 917,010,617,692.07/918,697.30
  6. Step 6: Final answer
    x = 998,164.05

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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.