Home / 430,385.64-644,903.52-272,280.12

Finding the Fourth Proportional to 430,385.64, 644,903.52 and 272,280.12

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Solution

The fourth proportional to 430,385.64, 644,903.52 and 272,280.12 is: 407,993.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,385.64 : 644,903.52 = 272,280.12 : x
  2. Step 2: Convert to fraction form
    430,385.64/644,903.52 = 272,280.12/x
  3. Step 3: Cross multiply
    430,385.64x = 644,903.52 × 272,280.12
  4. Step 4: Simplify right side
    430,385.64x = 175,594,407,814.02
  5. Step 5: Solve for x
    x = 175,594,407,814.02/430,385.64
  6. Step 6: Final answer
    x = 407,993.18

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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.