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Finding the Fourth Proportional to 614,549.16, 847,431.18 and 485,273.16

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Solution

The fourth proportional to 614,549.16, 847,431.18 and 485,273.16 is: 669,166.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,549.16 : 847,431.18 = 485,273.16 : x
  2. Step 2: Convert to fraction form
    614,549.16/847,431.18 = 485,273.16/x
  3. Step 3: Cross multiply
    614,549.16x = 847,431.18 × 485,273.16
  4. Step 4: Simplify right side
    614,549.16x = 411,235,606,601.13
  5. Step 5: Solve for x
    x = 411,235,606,601.13/614,549.16
  6. Step 6: Final answer
    x = 669,166.33

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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.