Home / 420,769,639.80-631,154,459.70-237,103,630.20

Finding the Fourth Proportional to 420,769,639.80, 631,154,459.70 and 237,103,630.20

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Solution

The fourth proportional to 420,769,639.80, 631,154,459.70 and 237,103,630.20 is: 355,655,445.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,769,639.80 : 631,154,459.70 = 237,103,630.20 : x
  2. Step 2: Convert to fraction form
    420,769,639.80/631,154,459.70 = 237,103,630.20/x
  3. Step 3: Cross multiply
    420,769,639.80x = 631,154,459.70 × 237,103,630.20
  4. Step 4: Simplify right side
    420,769,639.80x = 149,649,013,611,789,600
  5. Step 5: Solve for x
    x = 149,649,013,611,789,600/420,769,639.80
  6. Step 6: Final answer
    x = 355,655,445.30

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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.