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Finding the Fourth Proportional to 425,084,428.80, 637,626,643.20 and 425,084,428.80

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Solution

The fourth proportional to 425,084,428.80, 637,626,643.20 and 425,084,428.80 is: 637,626,643.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,084,428.80 : 637,626,643.20 = 425,084,428.80 : x
  2. Step 2: Convert to fraction form
    425,084,428.80/637,626,643.20 = 425,084,428.80/x
  3. Step 3: Cross multiply
    425,084,428.80x = 637,626,643.20 × 425,084,428.80
  4. Step 4: Simplify right side
    425,084,428.80x = 271,045,157,412,333,440
  5. Step 5: Solve for x
    x = 271,045,157,412,333,440/425,084,428.80
  6. Step 6: Final answer
    x = 637,626,643.20

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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.