Home / 915,143.70-1,262,944.92-527,815.08

Finding the Fourth Proportional to 915,143.70, 1,262,944.92 and 527,815.08

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Solution

The fourth proportional to 915,143.70, 1,262,944.92 and 527,815.08 is: 728,411.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,143.70 : 1,262,944.92 = 527,815.08 : x
  2. Step 2: Convert to fraction form
    915,143.70/1,262,944.92 = 527,815.08/x
  3. Step 3: Cross multiply
    915,143.70x = 1,262,944.92 × 527,815.08
  4. Step 4: Simplify right side
    915,143.70x = 666,601,373,985.39
  5. Step 5: Solve for x
    x = 666,601,373,985.39/915,143.70
  6. Step 6: Final answer
    x = 728,411.70

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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.