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Finding the Fourth Proportional to 811,448.10, 1,119,700.80 and 467,395.94

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Solution

The fourth proportional to 811,448.10, 1,119,700.80 and 467,395.94 is: 644,950.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,448.10 : 1,119,700.80 = 467,395.94 : x
  2. Step 2: Convert to fraction form
    811,448.10/1,119,700.80 = 467,395.94/x
  3. Step 3: Cross multiply
    811,448.10x = 1,119,700.80 × 467,395.94
  4. Step 4: Simplify right side
    811,448.10x = 523,343,602,336.25
  5. Step 5: Solve for x
    x = 523,343,602,336.25/811,448.10
  6. Step 6: Final answer
    x = 644,950.19

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Double scale
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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.