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Finding the Fourth Proportional to 771,407.55, 1,064,530.76 and 431,887.95

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Solution

The fourth proportional to 771,407.55, 1,064,530.76 and 431,887.95 is: 595,998.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,407.55 : 1,064,530.76 = 431,887.95 : x
  2. Step 2: Convert to fraction form
    771,407.55/1,064,530.76 = 431,887.95/x
  3. Step 3: Cross multiply
    771,407.55x = 1,064,530.76 × 431,887.95
  4. Step 4: Simplify right side
    771,407.55x = 459,758,005,488.90
  5. Step 5: Solve for x
    x = 459,758,005,488.90/771,407.55
  6. Step 6: Final answer
    x = 595,998.84

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1.5x scale

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.