Home / 459,729.40-688,038.90-403,742.20

Finding the Fourth Proportional to 459,729.40, 688,038.90 and 403,742.20

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Solution

The fourth proportional to 459,729.40, 688,038.90 and 403,742.20 is: 604,247.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,729.40 : 688,038.90 = 403,742.20 : x
  2. Step 2: Convert to fraction form
    459,729.40/688,038.90 = 403,742.20/x
  3. Step 3: Cross multiply
    459,729.40x = 688,038.90 × 403,742.20
  4. Step 4: Simplify right side
    459,729.40x = 277,790,339,171.58
  5. Step 5: Solve for x
    x = 277,790,339,171.58/459,729.40
  6. Step 6: Final answer
    x = 604,247.50

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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.