Home / 817,943.40-1,226,828.70-256,948.20

Finding the Fourth Proportional to 817,943.40, 1,226,828.70 and 256,948.20

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Solution

The fourth proportional to 817,943.40, 1,226,828.70 and 256,948.20 is: 385,395.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,943.40 : 1,226,828.70 = 256,948.20 : x
  2. Step 2: Convert to fraction form
    817,943.40/1,226,828.70 = 256,948.20/x
  3. Step 3: Cross multiply
    817,943.40x = 1,226,828.70 × 256,948.20
  4. Step 4: Simplify right side
    817,943.40x = 315,231,426,173.34
  5. Step 5: Solve for x
    x = 315,231,426,173.34/817,943.40
  6. Step 6: Final answer
    x = 385,395.16

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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.