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Finding the Fourth Proportional to 665,692.32, 918,655.52 and 359,767.70

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Solution

The fourth proportional to 665,692.32, 918,655.52 and 359,767.70 is: 496,479.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,692.32 : 918,655.52 = 359,767.70 : x
  2. Step 2: Convert to fraction form
    665,692.32/918,655.52 = 359,767.70/x
  3. Step 3: Cross multiply
    665,692.32x = 918,655.52 × 359,767.70
  4. Step 4: Simplify right side
    665,692.32x = 330,502,577,130.59
  5. Step 5: Solve for x
    x = 330,502,577,130.59/665,692.32
  6. Step 6: Final answer
    x = 496,479.48

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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.