Home / 1,272,909.99-1,909,424.78-420,056.18

Finding the Fourth Proportional to 1,272,909.99, 1,909,424.78 and 420,056.18

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Solution

The fourth proportional to 1,272,909.99, 1,909,424.78 and 420,056.18 is: 630,104.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,909.99 : 1,909,424.78 = 420,056.18 : x
  2. Step 2: Convert to fraction form
    1,272,909.99/1,909,424.78 = 420,056.18/x
  3. Step 3: Cross multiply
    1,272,909.99x = 1,909,424.78 × 420,056.18
  4. Step 4: Simplify right side
    1,272,909.99x = 802,065,676,172.29
  5. Step 5: Solve for x
    x = 802,065,676,172.29/1,272,909.99
  6. Step 6: Final answer
    x = 630,104.00

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1.5x scale

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.