Home / 425,569,009.20-638,353,513.80-102,452,881.20

Finding the Fourth Proportional to 425,569,009.20, 638,353,513.80 and 102,452,881.20

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Solution

The fourth proportional to 425,569,009.20, 638,353,513.80 and 102,452,881.20 is: 153,679,321.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,569,009.20 : 638,353,513.80 = 102,452,881.20 : x
  2. Step 2: Convert to fraction form
    425,569,009.20/638,353,513.80 = 102,452,881.20/x
  3. Step 3: Cross multiply
    425,569,009.20x = 638,353,513.80 × 102,452,881.20
  4. Step 4: Simplify right side
    425,569,009.20x = 65,401,156,712,953,960
  5. Step 5: Solve for x
    x = 65,401,156,712,953,960/425,569,009.20
  6. Step 6: Final answer
    x = 153,679,321.80

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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.