Home / 859,603.80-1,288,952.10-290,789.40

Finding the Fourth Proportional to 859,603.80, 1,288,952.10 and 290,789.40

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Solution

The fourth proportional to 859,603.80, 1,288,952.10 and 290,789.40 is: 436,030.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,603.80 : 1,288,952.10 = 290,789.40 : x
  2. Step 2: Convert to fraction form
    859,603.80/1,288,952.10 = 290,789.40/x
  3. Step 3: Cross multiply
    859,603.80x = 1,288,952.10 × 290,789.40
  4. Step 4: Simplify right side
    859,603.80x = 374,813,607,787.74
  5. Step 5: Solve for x
    x = 374,813,607,787.74/859,603.80
  6. Step 6: Final answer
    x = 436,030.65

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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.