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Finding the Fourth Proportional to 870,312.46, 1,305,448.03 and 512,750.92

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Solution

The fourth proportional to 870,312.46, 1,305,448.03 and 512,750.92 is: 769,114.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,312.46 : 1,305,448.03 = 512,750.92 : x
  2. Step 2: Convert to fraction form
    870,312.46/1,305,448.03 = 512,750.92/x
  3. Step 3: Cross multiply
    870,312.46x = 1,305,448.03 × 512,750.92
  4. Step 4: Simplify right side
    870,312.46x = 669,369,678,394.69
  5. Step 5: Solve for x
    x = 669,369,678,394.69/870,312.46
  6. Step 6: Final answer
    x = 769,114.21

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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.