Home / 459,706,415.20-689,559,622.80-287,377,813.60

Finding the Fourth Proportional to 459,706,415.20, 689,559,622.80 and 287,377,813.60

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Solution

The fourth proportional to 459,706,415.20, 689,559,622.80 and 287,377,813.60 is: 431,066,720.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,706,415.20 : 689,559,622.80 = 287,377,813.60 : x
  2. Step 2: Convert to fraction form
    459,706,415.20/689,559,622.80 = 287,377,813.60/x
  3. Step 3: Cross multiply
    459,706,415.20x = 689,559,622.80 × 287,377,813.60
  4. Step 4: Simplify right side
    459,706,415.20x = 198,164,136,747,104,704
  5. Step 5: Solve for x
    x = 198,164,136,747,104,704/459,706,415.20
  6. Step 6: Final answer
    x = 431,066,720.40

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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.