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Finding the Fourth Proportional to 459,384.40, 689,076.60 and 370,810.90

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Solution

The fourth proportional to 459,384.40, 689,076.60 and 370,810.90 is: 556,216.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,384.40 : 689,076.60 = 370,810.90 : x
  2. Step 2: Convert to fraction form
    459,384.40/689,076.60 = 370,810.90/x
  3. Step 3: Cross multiply
    459,384.40x = 689,076.60 × 370,810.90
  4. Step 4: Simplify right side
    459,384.40x = 255,517,114,214.94
  5. Step 5: Solve for x
    x = 255,517,114,214.94/459,384.40
  6. Step 6: Final answer
    x = 556,216.35

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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.