Home / 743,446.84-1,025,959.14-421,216.60

Finding the Fourth Proportional to 743,446.84, 1,025,959.14 and 421,216.60

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Solution

The fourth proportional to 743,446.84, 1,025,959.14 and 421,216.60 is: 581,280.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,446.84 : 1,025,959.14 = 421,216.60 : x
  2. Step 2: Convert to fraction form
    743,446.84/1,025,959.14 = 421,216.60/x
  3. Step 3: Cross multiply
    743,446.84x = 1,025,959.14 × 421,216.60
  4. Step 4: Simplify right side
    743,446.84x = 432,151,020,689.72
  5. Step 5: Solve for x
    x = 432,151,020,689.72/743,446.84
  6. Step 6: Final answer
    x = 581,280.32

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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.