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Finding the Fourth Proportional to 700,230.18, 966,321.63 and 398,424.18

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Solution

The fourth proportional to 700,230.18, 966,321.63 and 398,424.18 is: 549,827.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,230.18 : 966,321.63 = 398,424.18 : x
  2. Step 2: Convert to fraction form
    700,230.18/966,321.63 = 398,424.18/x
  3. Step 3: Cross multiply
    700,230.18x = 966,321.63 × 398,424.18
  4. Step 4: Simplify right side
    700,230.18x = 385,005,903,049.01
  5. Step 5: Solve for x
    x = 385,005,903,049.01/700,230.18
  6. Step 6: Final answer
    x = 549,827.63

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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.