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Finding the Fourth Proportional to 407,312.11, 613,407.30 and 370,950.50

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Solution

The fourth proportional to 407,312.11, 613,407.30 and 370,950.50 is: 558,647.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,312.11 : 613,407.30 = 370,950.50 : x
  2. Step 2: Convert to fraction form
    407,312.11/613,407.30 = 370,950.50/x
  3. Step 3: Cross multiply
    407,312.11x = 613,407.30 × 370,950.50
  4. Step 4: Simplify right side
    407,312.11x = 227,543,744,781.10
  5. Step 5: Solve for x
    x = 227,543,744,781.10/407,312.11
  6. Step 6: Final answer
    x = 558,647.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.