Home / 913,707.51-1,260,901.35-505,800.87

Finding the Fourth Proportional to 913,707.51, 1,260,901.35 and 505,800.87

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Solution

The fourth proportional to 913,707.51, 1,260,901.35 and 505,800.87 is: 697,996.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,707.51 : 1,260,901.35 = 505,800.87 : x
  2. Step 2: Convert to fraction form
    913,707.51/1,260,901.35 = 505,800.87/x
  3. Step 3: Cross multiply
    913,707.51x = 1,260,901.35 × 505,800.87
  4. Step 4: Simplify right side
    913,707.51x = 637,764,999,814.18
  5. Step 5: Solve for x
    x = 637,764,999,814.18/913,707.51
  6. Step 6: Final answer
    x = 697,996.89

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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.