Home / 738,988.90-1,019,804.22-399,457.15

Finding the Fourth Proportional to 738,988.90, 1,019,804.22 and 399,457.15

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Solution

The fourth proportional to 738,988.90, 1,019,804.22 and 399,457.15 is: 551,250.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,988.90 : 1,019,804.22 = 399,457.15 : x
  2. Step 2: Convert to fraction form
    738,988.90/1,019,804.22 = 399,457.15/x
  3. Step 3: Cross multiply
    738,988.90x = 1,019,804.22 × 399,457.15
  4. Step 4: Simplify right side
    738,988.90x = 407,368,087,279.17
  5. Step 5: Solve for x
    x = 407,368,087,279.17/738,988.90
  6. Step 6: Final answer
    x = 551,250.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.