Home / 817,411.68-1,226,118.20-390,847.14

Finding the Fourth Proportional to 817,411.68, 1,226,118.20 and 390,847.14

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Solution

The fourth proportional to 817,411.68, 1,226,118.20 and 390,847.14 is: 586,271.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,411.68 : 1,226,118.20 = 390,847.14 : x
  2. Step 2: Convert to fraction form
    817,411.68/1,226,118.20 = 390,847.14/x
  3. Step 3: Cross multiply
    817,411.68x = 1,226,118.20 × 390,847.14
  4. Step 4: Simplify right side
    817,411.68x = 479,224,789,817.71
  5. Step 5: Solve for x
    x = 479,224,789,817.71/817,411.68
  6. Step 6: Final answer
    x = 586,271.03

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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.