Home / 420,769,643.80-631,154,465.70-237,103,634.20

Finding the Fourth Proportional to 420,769,643.80, 631,154,465.70 and 237,103,634.20

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Solution

The fourth proportional to 420,769,643.80, 631,154,465.70 and 237,103,634.20 is: 355,655,451.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,769,643.80 : 631,154,465.70 = 237,103,634.20 : x
  2. Step 2: Convert to fraction form
    420,769,643.80/631,154,465.70 = 237,103,634.20/x
  3. Step 3: Cross multiply
    420,769,643.80x = 631,154,465.70 × 237,103,634.20
  4. Step 4: Simplify right side
    420,769,643.80x = 149,649,017,559,029,248
  5. Step 5: Solve for x
    x = 149,649,017,559,029,248/420,769,643.80
  6. Step 6: Final answer
    x = 355,655,451.30

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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.