Home / 724,703.28-1,000,182.78-438,225.40

Finding the Fourth Proportional to 724,703.28, 1,000,182.78 and 438,225.40

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Solution

The fourth proportional to 724,703.28, 1,000,182.78 and 438,225.40 is: 604,806.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,703.28 : 1,000,182.78 = 438,225.40 : x
  2. Step 2: Convert to fraction form
    724,703.28/1,000,182.78 = 438,225.40/x
  3. Step 3: Cross multiply
    724,703.28x = 1,000,182.78 × 438,225.40
  4. Step 4: Simplify right side
    724,703.28x = 438,305,498,838.61
  5. Step 5: Solve for x
    x = 438,305,498,838.61/724,703.28
  6. Step 6: Final answer
    x = 604,806.84

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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.