Home / 684,478.40-1,026,787.98-258,373.14

Finding the Fourth Proportional to 684,478.40, 1,026,787.98 and 258,373.14

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Solution

The fourth proportional to 684,478.40, 1,026,787.98 and 258,373.14 is: 387,586.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,478.40 : 1,026,787.98 = 258,373.14 : x
  2. Step 2: Convert to fraction form
    684,478.40/1,026,787.98 = 258,373.14/x
  3. Step 3: Cross multiply
    684,478.40x = 1,026,787.98 × 258,373.14
  4. Step 4: Simplify right side
    684,478.40x = 265,294,434,506.86
  5. Step 5: Solve for x
    x = 265,294,434,506.86/684,478.40
  6. Step 6: Final answer
    x = 387,586.28

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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.