Home / 745,809.39-1,029,139.83-419,070.51

Finding the Fourth Proportional to 745,809.39, 1,029,139.83 and 419,070.51

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Solution

The fourth proportional to 745,809.39, 1,029,139.83 and 419,070.51 is: 578,273.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,809.39 : 1,029,139.83 = 419,070.51 : x
  2. Step 2: Convert to fraction form
    745,809.39/1,029,139.83 = 419,070.51/x
  3. Step 3: Cross multiply
    745,809.39x = 1,029,139.83 × 419,070.51
  4. Step 4: Simplify right side
    745,809.39x = 431,282,153,419.41
  5. Step 5: Solve for x
    x = 431,282,153,419.41/745,809.39
  6. Step 6: Final answer
    x = 578,273.97

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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.