Home / 688,008.40-1,030,457.40-408,072.40

Finding the Fourth Proportional to 688,008.40, 1,030,457.40 and 408,072.40

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Solution

The fourth proportional to 688,008.40, 1,030,457.40 and 408,072.40 is: 611,186.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,008.40 : 1,030,457.40 = 408,072.40 : x
  2. Step 2: Convert to fraction form
    688,008.40/1,030,457.40 = 408,072.40/x
  3. Step 3: Cross multiply
    688,008.40x = 1,030,457.40 × 408,072.40
  4. Step 4: Simplify right side
    688,008.40x = 420,501,224,315.76
  5. Step 5: Solve for x
    x = 420,501,224,315.76/688,008.40
  6. Step 6: Final answer
    x = 611,186.18

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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.