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Finding the Fourth Proportional to 898,458.60, 1,239,425.70 and 535,626.92

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Solution

The fourth proportional to 898,458.60, 1,239,425.70 and 535,626.92 is: 738,898.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,458.60 : 1,239,425.70 = 535,626.92 : x
  2. Step 2: Convert to fraction form
    898,458.60/1,239,425.70 = 535,626.92/x
  3. Step 3: Cross multiply
    898,458.60x = 1,239,425.70 × 535,626.92
  4. Step 4: Simplify right side
    898,458.60x = 663,869,770,259.84
  5. Step 5: Solve for x
    x = 663,869,770,259.84/898,458.60
  6. Step 6: Final answer
    x = 738,898.57

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Double scale
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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.