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Finding the Fourth Proportional to 898,271.80, 1,347,407.70 and 425,879.80

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Solution

The fourth proportional to 898,271.80, 1,347,407.70 and 425,879.80 is: 638,819.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,271.80 : 1,347,407.70 = 425,879.80 : x
  2. Step 2: Convert to fraction form
    898,271.80/1,347,407.70 = 425,879.80/x
  3. Step 3: Cross multiply
    898,271.80x = 1,347,407.70 × 425,879.80
  4. Step 4: Simplify right side
    898,271.80x = 573,833,721,794.46
  5. Step 5: Solve for x
    x = 573,833,721,794.46/898,271.80
  6. Step 6: Final answer
    x = 638,819.70

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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.