Home / 636,743.28-878,707.80-350,285.16

Finding the Fourth Proportional to 636,743.28, 878,707.80 and 350,285.16

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Solution

The fourth proportional to 636,743.28, 878,707.80 and 350,285.16 is: 483,394.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,743.28 : 878,707.80 = 350,285.16 : x
  2. Step 2: Convert to fraction form
    636,743.28/878,707.80 = 350,285.16/x
  3. Step 3: Cross multiply
    636,743.28x = 878,707.80 × 350,285.16
  4. Step 4: Simplify right side
    636,743.28x = 307,798,302,316.25
  5. Step 5: Solve for x
    x = 307,798,302,316.25/636,743.28
  6. Step 6: Final answer
    x = 483,394.66

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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.