Home / 989,457.40-1,484,429.10-279,476.20

Finding the Fourth Proportional to 989,457.40, 1,484,429.10 and 279,476.20

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Solution

The fourth proportional to 989,457.40, 1,484,429.10 and 279,476.20 is: 419,282.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,457.40 : 1,484,429.10 = 279,476.20 : x
  2. Step 2: Convert to fraction form
    989,457.40/1,484,429.10 = 279,476.20/x
  3. Step 3: Cross multiply
    989,457.40x = 1,484,429.10 × 279,476.20
  4. Step 4: Simplify right side
    989,457.40x = 414,862,604,037.42
  5. Step 5: Solve for x
    x = 414,862,604,037.42/989,457.40
  6. Step 6: Final answer
    x = 419,282.94

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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.